diff --git a/src/room/GroupCallView.tsx b/src/room/GroupCallView.tsx
index f1986d4b2..af97ce073 100644
--- a/src/room/GroupCallView.tsx
+++ b/src/room/GroupCallView.tsx
@@ -85,6 +85,14 @@ export const GroupCallView: FC<Props> = ({
     };
   }, [rtcSession]);
 
+  useEffect(() => {
+    // Sanity check the room object
+    if (client.getRoom(rtcSession.room.roomId) !== rtcSession.room)
+      logger.warn(
+        `We've ended up with multiple rooms for the same ID (${rtcSession.room.roomId}). This indicates a bug in the group call loading code, and may lead to incomplete room state.`,
+      );
+  }, [client, rtcSession.room]);
+
   const { displayName, avatarUrl } = useProfile(client);
   const roomName = useRoomName(rtcSession.room);
   const roomAvatar = useRoomAvatar(rtcSession.room);
diff --git a/src/state/CallViewModel.ts b/src/state/CallViewModel.ts
index 219df600c..6cd8495bb 100644
--- a/src/state/CallViewModel.ts
+++ b/src/state/CallViewModel.ts
@@ -16,7 +16,11 @@ import {
   ParticipantEvent,
   RemoteParticipant,
 } from "livekit-client";
-import { Room as MatrixRoom, RoomMember } from "matrix-js-sdk/src/matrix";
+import {
+  Room as MatrixRoom,
+  RoomMember,
+  RoomStateEvent,
+} from "matrix-js-sdk/src/matrix";
 import {
   EMPTY,
   Observable,
@@ -321,6 +325,8 @@ export class CallViewModel extends ViewModel {
     this.remoteParticipants,
     observeParticipantMedia(this.livekitRoom.localParticipant),
     duplicateTiles.value,
+    // Also react to changes in the list of members
+    fromEvent(this.matrixRoom, RoomStateEvent.Update).pipe(startWith(null)),
   ]).pipe(
     scan(
       (