During room.disconnect(), LiveKit fires ParticipantDisconnected for
each remote participant BEFORE the final Disconnected event. Because
roomRef was still set, guardedUpdate() called updateParticipants(),
which updated the voiceStore while isLiveKitConnected was still true.
SoundController played user_leave for each departing participant
alongside the disconnect sound.
Fix: set roomRef.current = null before calling destroyRoom(). This
causes guardedUpdate() to return early for all teardown events.
The disconnect function handles cleanup after destroyRoom resolves.
Jannis Braun
a1a7c2ff18