Merge pull request 'fix(timeline): media gallery / activity log no longer make the timeline drop messages (#259)' (#368) from fix/filtered-timeline-double-count into lotus

src/app/features/room/RoomTimeline.tsx

@@ -90,6 +90,7 @@ import {
   isMembershipChanged,
   reactionOrEditEvent,
   sendRoomEvent,
+  isFromFilteredTimelineSet,
 } from '../../utils/room';
 import { getLastEditDiff } from '../../utils/editDiff';
 import { tick } from '../../utils/haptics';
@@ -410,6 +411,9 @@ const useLiveEventArrive = (room: Room, onArrive: (mEvent: MatrixEvent) => void)
       data,
     ) => {
       if (eventRoom?.roomId !== room.roomId || !data.liveEvent) return;
+      // [Gitea #259] The media gallery / activity log register filtered timeline
+      // sets whose events the room re-emits as live: don't count them twice.
+      if (isFromFilteredTimelineSet(data)) return;
       onArrive(mEvent);
     };
     const handleRedaction: RoomEventHandlerMap[RoomEvent.Redaction] = (mEvent, eventRoom) => {

src/app/features/room/widgets/RoomWidgetView.tsx

@@ -14,6 +14,7 @@ import { GeneralWidgetDriver } from './GeneralWidgetDriver';
 import { WidgetPermissionRequest, isWidgetUrlSafe } from './widgetUtils';
 import { restrictWidgetMessages } from '../../../plugins/widgetTransport';
 import { WidgetPermissionPrompt } from './WidgetPermissionPrompt';
+import { isFromFilteredTimelineSet } from '../../../utils/room';
 
 type PendingAsk = {
   requests: WidgetPermissionRequest[];
@@ -111,6 +112,7 @@ export function RoomWidgetView({ room, widget }: RoomWidgetViewProps) {
     };
     const onTimeline: RoomEventHandlerMap[RoomEvent.Timeline] = (ev, r, toStart, removed, data) => {
       if (toStart || removed || !data?.liveEvent) return;
+      if (isFromFilteredTimelineSet(data)) return; // [Gitea #259] don't feed widgets each event twice
       if (ev.isBeingDecrypted()) ev.once(MatrixEventEvent.Decrypted, feed);
       else feed(ev);
     };