Jitsi issue: when a moderator leaves, the room still exists and participants stick around. Fix: replace original USER_LEFT (around line 1988) with the function below. It will kick all users out and leave/disconnect the room.

conference.js

room.on(JitsiConferenceEvents.USER_LEFT, (id, user) => {
    // The logic shared between RN and web.
    commonUserLeftHandling(APP.store, room, user);

    // if user is a moderator, kick everyone out
    if(user.isModerator) {
        let participants = APP.conference.listMembers();
        participants.forEach(participant => {
            APP.store.dispatch(kickedOut(room, participant));
            this.leaveRoomAndDisconnect();
        });
      this.leaveRoomAndDisconnect();
    }

    if (user.isHidden()) {
        return;
    }

    logger.log(`USER ${id} LEFT:`, user);

    APP.UI.onSharedVideoStop(id);
});