diff --git a/src/app/components/CallEmbedProvider.tsx b/src/app/components/CallEmbedProvider.tsx
index cfb4db070..363ee4a1d 100644
--- a/src/app/components/CallEmbedProvider.tsx
+++ b/src/app/components/CallEmbedProvider.tsx
@@ -1231,7 +1231,15 @@ export function CallEmbedProvider({ children }: CallEmbedProviderProps) {
           left: 0,
           width: '100%',
           height: '50%',
-          ...(callVisible && !pipMode ? wallpaperStyle : {}),
+          // [Gitea #224] The fork renders EC transparent (lotusTransparent) so the
+          // wallpaper shows through the full-size embed; in PiP the thing behind
+          // the frame is whatever room you navigated to, so give it an opaque
+          // surface instead of letting the timeline bleed through the tiles.
+          ...(pipMode
+            ? { background: color.Surface.Container }
+            : callVisible
+              ? wallpaperStyle
+              : {}),
         }}
         ref={callEmbedRef}
       >