cinny/LOTUS_BUGS.md

# Lotus Chat — Open Bugs & Technical Debt

**Only OPEN and awaiting-verification items live here.** Resolved findings
(fixed-and-verified, false-positives, won't-fix) have been removed to keep this
actionable — the full history is in git. Items fixed in code but not yet
verified in a real environment are in **Needs Verification** below and have
step-by-step checks in [`LOTUS_TESTING.md`](./LOTUS_TESTING.md).

> Design rules for any fix here: follow the **Native-Cinny Law** and **TDS
> Design Law** in [`LOTUS_TODO.md`](./LOTUS_TODO.md).

---

## ⚠️ Needs Verification — fixed in code, awaiting live testing

Implemented and gate-green; confirm each per `LOTUS_TESTING.md`, then delete the row.

| ID   | Item                                                                                                                                    | File / area                                                                | Test                                                                                                                                                                                      |
| :--- | :-------------------------------------------------------------------------------------------------------------------------------------- | :------------------------------------------------------------------------- | :---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| #2   | Chat-background animation flicker (`contain:paint`)                                                                                     | `lotus/chatBackground.ts`                                                  | F1                                                                                                                                                                                        |
| #4   | Ringtone re-fixes: classic loudness + caller decline notice (A2 ✓ live)                                                                 | `CallEmbedProvider.tsx`, `ringtones.ts`                                    | A1,A3,A4                                                                                                                                                                                  |
| #6   | Background vs. seasonal theme mutual exclusion                                                                                          | `state/settings.ts`, `General.tsx`                                         | F2                                                                                                                                                                                        |
| #7   | Composer toolbar touch targets (≥44px)                                                                                                  | `room/RoomInput.tsx`                                                       | E1                                                                                                                                                                                        |
| #8   | Room Settings horizontal overflow (mobile)                                                                                              | `components/page/style.css.ts`                                             | E2                                                                                                                                                                                        |
| #9   | Modal fullscreen on mobile (`useModalStyle`)                                                                                            | 22+ modal files                                                            | E3                                                                                                                                                                                        |
| #10  | Composer not hidden by keyboard (`100dvh`)                                                                                              | `src/index.css`                                                            | E4                                                                                                                                                                                        |
| #12  | PiP "All muted" badge re-fixed (was firing on any single mute)                                                                          | `hooks/useCallSpeakers.ts`                                                 | G1                                                                                                                                                                                        |
| N96  | Call-recovery overlay single "Back" button                                                                                              | `call/CallView.tsx`                                                        | A7                                                                                                                                                                                        |
| N95  | AFK-monitor mic released on mute (OS indicator clears)                                                                                  | `hooks/useAfkAutoMute.ts`                                                  | L1                                                                                                                                                                                        |
| N108 | Maskable PWA icons (Android adaptive)                                                                                                   | `public/manifest.json` + `res/android/maskable-*`                          | L2                                                                                                                                                                                        |
| EC   | EC iframe load watchdog + self-heal + recovery UI                                                                                       | `plugins/call/CallEmbed.ts`, `CallView.tsx`                                | A7                                                                                                                                                                                        |
| N105 | Notification clicks work after tab close (SW `notificationclick` + `showNotification`)                                                  | `sw.ts`, `utils/dom.ts`, `ClientNonUIFeatures.tsx`                         | get a msg notif, close the tab, click it → app focuses/opens + routes to the room                                                                                                         |
| Gal  | MediaGallery lazy-decrypt (true virtualization deferred)                                                                                | `room/MediaGallery.tsx`                                                    | H1                                                                                                                                                                                        |
| a11y | aria-labels: edit-history / reaction / thread / reply                                                                                   | `message/*` (`FallbackContent`, `Reaction`, `Reply`)                       | I                                                                                                                                                                                         |
| P3-8 | Thread Panel (side drawer, chips, threaded receipts, thread composer)                                                                   | `features/room/thread/*`, `RoomTimeline/RoomInput`                         | 6-step checklist in LOTUS_TODO §P3-8                                                                                                                                                      |
| P4-4 | KaTeX math (`$…$`, `$$…$$`, data-mx-maths; lazy chunk)                                                                                  | `utils/mathParse.ts`, `components/math/`                                   | send `$x^2$`, `$$\int f$$`, `$5 and $10` (stays text), math inside code block (stays text)                                                                                                |
| P4-8 | Encrypted-search cache (opt-in toggle, clear button, logout wipe)                                                                       | `utils/searchCache.ts`, message-search                                     | enable in search panel → search → reload → coverage persists; logout wipes                                                                                                                |
| N97a | Session blob migration + cross-tab logout sync                                                                                          | `state/sessions.ts`, `useSessionSync`                                      | login on old build → new build migrates; logout in tab A → tab B drops to auth                                                                                                            |
| P4-1 | Slack-style thread notifications (participating default, All/Mentions/Mute, badge math)                                                 | `utils/threadNotifications.ts`, `ClientNonUIFeatures`, `roomToUnread`      | 6-step checklist in LOTUS_TODO §P4-1                                                                                                                                                      |
| AW-1 | Scheduled-message cancel no longer ghost-sends (error row on failure)                                                                   | `ScheduledMessagesTray.tsx`                                                | schedule → cancel with network cut → item stays + error; retry works                                                                                                                      |
| AW-2 | Emoji lazy-load (search/autocomplete/recents fill in; board opens fast)                                                                 | `plugins/emoji.ts` + consumers                                             | first emoji-board open of a session: grid+search populate; reactions still label                                                                                                          |
| AW-3 | SW precache (repeat-visit near-instant; deploys still picked up immediately)                                                            | `sw.ts`, `vite.config.js`                                                  | load app twice (2nd = cached assets); deploy → reload picks new version                                                                                                                   |
| AW-4 | Desktop CSP tighten + Escape/panel fixes + thread Jump to Latest                                                                        | `tauri.conf.json`, Room/ThreadPanel                                        | desktop: boots, avatars/media load, VT323 font renders, location maps embed, calls connect, deep links work                                                                               |
| P3-4 | Accessibility compliance pass (collapsed-msg SR sender, form/overlay labels, typing announce, focus-return, `?` help, jsx-a11y CI gate) | `message/*`, `RoomViewTyping`, `features/shortcuts/*`, `eslint.config.mjs` | LOTUS_TESTING §P — axe-core + VoiceOver/NVDA on the golden path                                                                                                                           |
| P6-1 | Desktop Linux parity (no-sleep in calls, launcher badge), autostart toggle, tray Do-Not-Disturb                                         | `native/power.rs`, `lib.rs`, `useTauriDnd`, `General.tsx`                  | Linux desktop: no display sleep during a call; tray DND silences notifications; launch-on-login persists; Unity badge (Ubuntu); DND toggle polarity                                       |
| P6-2 | EC deafen/screenshare-audio-mute via `io.lotus.set_deafen` (retires the `<audio>.muted` iframe hack)                                    | fork `lotusDeafen.ts`, cinny `CallControl.ts`                              | AFTER publish+pin-bump: deafen silences remote audio + survives a reconnect / new screenshare / late joiner (the cases the DOM hack failed); screenshare-audio-mute toggles independently |
| P6-3 | Forward-to-multiple-rooms (multi-select + partial-failure summary) + live bookmark previews (edits/redactions, snapshot fallback)       | `ForwardMessageDialog.tsx`+`forwardContent.ts`, `BookmarksPanel.tsx`       | forward one msg to 3 rooms (incl. 1 you cannot post to = partial summary); bookmark then edit shows edited; redact shows deleted; leave room shows snapshot                               |
| P6-4 | HSTS + Permissions-Policy on prod nginx (+ contrib examples)                                                                            | `matrix/cinny/nginx.conf`, `contrib/nginx`, `contrib/caddy`                | after `nginx -s reload`: `curl -sI https://chat.lotusguild.org` shows HSTS + Permissions-Policy; a call (cam/mic/screenshare) + location share still work                                 |

**Verified working in live testing (2026-06):** A2, B1–B4, C1, C3, D (mic/camera/deafen/screenshare/fullscreen/more-menu/PiP). Denoise quality in D is still poor — tracked under the denoise project, not a regression.

---

## 🧩 Element Call source-level items — now actionable via the fork

> 🔱 **[EC-FORK]** **UPDATE 2026-06-30: Phase 2 IMPLEMENTED.** We own and
> self-build Element Call (`LotusGuild/element-call` →
> `@lotusguild/element-call-embedded@0.20.1-lotus.1`, cinny wired). A5/A6/A7
> below are **fixed in the fork** — they are now ⚠️ awaiting **live
> verification** (`LOTUS_TESTING.md` §D2), not open work. See
> [`HANDOFF_ELEMENT_CALL_FORK.md`](./HANDOFF_ELEMENT_CALL_FORK.md) §10. Delete each
> row once verified live.

The in-call participant grid is rendered **inside EC's app** — now editable source
(previously a prebuilt npm bundle we could only style around). Status of the items
from testing:

- **A5 — "Focus camera": ⚠️ FIXED in fork, awaiting verify (D2-3).** cinny now
  sends an `io.lotus.focus_participant` widget action that pins a participant in
  EC's layout (coexisting with / overriding the screenshare spotlight); the old
  `.click()`-the-tile DOM hack in `CallControl.ts` is deleted.
- **A6 — avatar decorations in-call: ⚠️ FIXED in fork, awaiting verify (D2-4).**
  cinny pushes `io.lotus.decorations` (per-user APNG URLs) and the fork renders
  them on EC's participant video-tile avatars — not just our pre-join lobby roster.
- **A7 — mic dead after EC's "Reconnect": ⚠️ FIXED in fork, awaiting verify
  (D2-1).** Denoise moved into EC's mic-capture/publish pipeline as a first-class
  LiveKit `TrackProcessor` (flag `lotusDenoiseSource=1`); EC re-runs it on every
  (re)publish, so reconnects keep denoise alive natively. The build-time
  `getUserMedia`/`index.html` injection (the root cause) is removed. **Highest
  blast radius — everyone's mic; verify D2-1 carefully.**

---

## 🔴 Open — Actionable

### 🧨 Encryption / E2EE — ⚠️ EXTREME COMPLEXITY · 🧠 PLANNING SESSION REQUIRED · 👤 SENIOR ENGINEER

> 🧰 **Investigation kit ready (2026-07):** [`LOTUS_E2EE_INVESTIGATION.md`](./LOTUS_E2EE_INVESTIGATION.md)
> has the per-KE capture runbook (console signatures, synapse-side queries, the
> KE-1→KE-2 causality decision tree, ranked remediations), and the client now
> ships a **Crypto Diagnostics** capture helper (Settings) — run it during the
> next affected call and download the report before starting any fix.

> **Observed live in prod 2026-06-30** on `chat.lotusguild.org` during a 2-person
> **Element Call** (E2EE enabled). These span **client rust-crypto (via
> `matrix-js-sdk@41.6.0-rc.0`) ↔ Synapse ↔ Element Call's MatrixRTC E2EE** and are
> very likely **interrelated** (see KE-1 → KE-2). Do **not** spot-fix — they need
> a dedicated cross-system planning session with the homeserver owner. Capture
> full client console + a synapse-side trace for the same call before starting.
> **None of these are caused by the EC fork work** (the issues reproduce on the
> old build; the local mic/denoise path is unrelated to key distribution).

- **KE-1 — One-time-key (OTK) upload conflict storm (CRITICAL, root-cause candidate).**
  `POST /_matrix/client/v3/keys/upload` returns `400 M_UNKNOWN: One time key
signed_curve25519:AAAAAAAAAGQ already exists. Old key: {…} new key: {…}` —
  firing **continuously** (many/sec). The client repeatedly tries to publish an
  OTK at a key id the server already holds **with a different value**, i.e. the
  rust-crypto key store and Synapse have **diverged OTK state**. Impact: floods
  the crypto outgoing-request loop and is the prime suspect for the downstream
  missing-key failures (no fresh OTKs ⇒ no new Olm sessions ⇒ undecryptable
  to-device key events). _Investigate:_ device/key-store reset-or-restore
  mismatch, OTK id-counter desync, RC-SDK (`41.6.0-rc.0`) regression, or a
  Synapse OTK bug. Repro signature: grep console for `already exists`.
  **Extreme — planning session.**
  **Update 2026-07 (investigation §6):** upstream `matrix-rust-sdk#5200` (still
  OPEN) confirms the mechanism — on the 400, `mark_request_as_sent()` never fires
  so the SDK re-issues the identical upload forever. **`41.7.0` does NOT fix it**
  (crypto-wasm 17→18.3.1 has no OTK/upload change; 18.3.x was to-device security
  only) — the SDK-pin lever is closed. Root cause = **store↔server OTK
  divergence**; the leading **web-specific** trigger is that cinny never calls
  **`navigator.storage.persist()`**, so the IndexedDB crypto store is evictable
  while the `localStorage` session/device-id survives → device resurrects with a
  blank store → re-uploads OTKs the server still holds. **Actionable preventive
  fix (buildable now, no call needed):** request persistent storage on login
  (+ optional multi-tab guard + 400-loop→recovery-prompt). Healing an already-
  diverged device still needs a clean **logout+login** (not just "clear
  storage"). See `LOTUS_E2EE_INVESTIGATION.md` §6.

- **KE-2 — Element Call media keys not arriving/decrypting → audio & video cut out (CRITICAL).**
  `MissingKey: missing key at index N for participant @user`, `skipping decryption
due to missing key`, `MissingKey: key set not found for @user at index 0`, and
  rust-crypto `WARN … Received an unexpected encrypted to-device event …
event_type="io.element.call.encryption_keys"`. EC distributes per-participant
  media keys as **encrypted to-device `io.element.call.encryption_keys`** events;
  these aren't being received/decrypted in order, so remote LiveKit audio/video
  can't be decrypted — **this is the "friend's audio cuts out occasionally"
  symptom.** Almost certainly downstream of **KE-1** (broken Olm sessions). Spans
  EC's MatrixRTC E2EE + rust-crypto to-device + Synapse. **Extreme — planning
  session.**

- **KE-3 — Timeline decryption error: missing `algorithm` field (HIGH).**
  `Error decrypting event (… type=m.room.encrypted …): DecryptionError[msg:
missing field 'algorithm' at line 1 column 138 …]`. A malformed/legacy
  encrypted event (or a serialization mismatch in the RC SDK) that rust-crypto
  can't parse. Lower frequency than KE-1/2 but a distinct decode-path failure —
  capture the offending event id (`$SASBBzoqj…` seen) and inspect its raw content.

- **KE-4 — MatrixRTC delayed-event / membership timeouts (MEDIUM-HIGH, reliability).**
  `[MembershipManager] Network local timeout error while sending event, immediate
retry … AbortError: Restart delayed event timed out before the HS responded`,
  with repeated `org.matrix.msc4157.update_delayed_event`. MSC4140/4157
  delayed-event reliability against `matrix.lotusguild.org` — can cause stale/ghost
  call membership and missed leave events. May be partly **homeserver
  responsiveness**; correlate with synapse latency/load. Include in the same
  planning session since it shares the call-reliability + HS-interaction surface.

### Security & Privacy

- **N97 — Access token stored in plaintext `localStorage`** (`state/sessions.ts`), vulnerable to XSS; device ID likewise. Architectural — needs a token-protection / session-storage redesign.
- ~~**Session writes are non-atomic and not cross-tab synced**~~ — **done (2026-07):** atomic single-key `cinny_session_v1` blob (legacy-key migration + dual-write) + `subscribeSessionChanges`/`useSessionSync` cross-tab reload. (The plaintext-token concern in N97 above is the remaining, separate architectural item.)
- **Persisted PII without encryption:** user status message + expiry (`settings/account/Profile.tsx`), unsent composer drafts (`room/RoomInput.tsx`). Leak risk on shared devices.

### PWA / Offline / Notifications

- **N107 — SW has no `push` handler** — Web Push delivery is entirely non-functional. Needs a `push` listener + a Matrix push-gateway integration.
- **No app-asset caching strategy** (`src/sw.ts`) — no offline capability.
- ~~**`manifest: false`** may block PWA install~~ — **verified OK (2026-06):** `index.html` links `/manifest.json`, which exists in `public/` and is copied to `dist/`; VitePWA intentionally doesn't generate one. Not a bug.

### Dependencies & Build

- ~~**`matrix-js-sdk` pinned to a Release Candidate**~~ — **done (2026-07):** moved to `41.7.0` stable (crypto-wasm 18.3.1 security bump). Deep-audit dep triage: all 16 npm advisories are dev-only/unreachable/dead-dep — zero shipped exposure; dead `dompurify` removed. `@atlaskit`/build-tool pins remain review-worthy but low priority.
- **Build-time overhead:** `lotusDenoise` does heavy sequential `fs` work in `closeBundle`; `viteStaticCopy` config is complex with redundant renames — could be streamlined.

### Code Hygiene / DevEx

- **Automated test suite — 561+ tests across 65+ modules, a hard CI gate.** `npm test` runs Node's built-in runner via `tsx` (not vitest — Vite 8 is ahead of vitest's range) and **blocks the build job on failure**. Broad pure-logic coverage: utils (common, regex, sanitize/XSS, time, matrix, matrix-uia, mimeTypes, sort, accentColor, findAndReplace, AsyncSearch, ASCIILexicalTable, keyboard, room, matrix-crypto, featureCheck, syntaxHighlight, imageCompression, user-agent, callSounds), state (settings, sessions, recentSearches, upload, typingMembers, lists, room-list, toast, scheduledMessages, backupRestore, callEmbed/callPreferences, spaceRooms, …), plugins (matrix-to, call/utils, via-servers, bad-words, recent-emoji, custom-emoji, markdown block/inline/utils), OIDC (cs-api, useParsedLoginFlows, oidcState), lotus/avatarDecorations, message-search, search filters. Prevention work has caught + fixed **4 real bugs** (`findAndReplace` infinite-loop; `getSettings` crash-on-load when storage is blocked; `isMacOS` never matching modern Macs; `isMLDenoiseSupported` throwing `ReferenceError` instead of returning false on browsers lacking the `AudioWorkletNode` binding). **Next:** component/integration tests (the untestable-under-tsx DOM/React surface).
- **Extensive `as any` casts** across `src/` — gradual typing cleanup.
- **`types/matrix/` mirrors SDK types** instead of importing them — drift risk.
- ~~**Hardcoded CDN URL** should move to an env var~~ — **done:** `avatarDecorations.ts` already honors a `VITE_DECORATION_CDN` env override (lines 14-16); the in-repo literal is only the default. Nothing left.
- **`patch-folds.mjs` edits `node_modules` directly** — consider `patch-package`.
- **Infra docs:** `contrib/nginx` lacks security headers (HSTS/CSP) + uses rewrites over `try_files`; `contrib/caddy` has a placeholder path. CI/CD (`prod-deploy.yml`): sequential deploy, aggressive 1-min Netlify timeout, `package-manager-cache: false`.
- **README:** keep the fork-sync version + logo path current. (`CONTRIBUTING.md` is intentionally left as upstream Cinny's — not a Lotus concern.)
- **Architecture notes (low priority):** deep `features/` + `hooks/` nesting, many small coupled hooks, possible dead CSS/components, `SpacingVariant` / `DropTarget` recipe simplification.
- **Git workflow (forward-looking):** keep commits scoped — past monolithic "fix all bugs" commits and inconsistent prefixes hurt `git bisect`.

### Big Projects

- ~~**#5 — Seasonal themes & chat-background redesign.**~~ **DONE (2026-06/07):** 11 seasonal/holiday overlays shipped and later toned down + given a settings preview grid; all 19 chat backgrounds redesigned (Carbon + Aurora kept per user preference), one design sprint each, GPU-friendly CSS with `prefers-reduced-motion` + pause toggle. Remaining polish rides normal bug flow, not a "big project."