Since the update of VRChat 2020.2.3, build 944 on 2020-6-18 Some people can no longer play videos.
Before that, people were able to play back Youtube videos and live streams using VRC_SyncVideoStream and VRC_SyncVideoPlayer, but since the update, some people have been unable to do so.
We have a VRC_SyncVideoStream player in our world with autoplay turned on, but since the update, there have been people failing to play back every day, causing "Master is stuck".
Once Master is stuck, all users who have joined since then will not be able to play the video.
This is very inconvenient because the world instance must be recreated to play the video.