1. Launch VRChat
  2. Load Avatar
  3. Activate an animation that uses Buffer Particles (basically emitters that have their subemitters removed from their parents. I use them to re-use a common particle system to optimize a bit)
  4. If on the Unity 2022 Beta, remote users who see the animation instantly crash with no warning. As in, the game instantly closes.
This was not done intentionally and frankly I am appalled my avatar has become a crasher unwillingly. I'll do whatever I can to mitigate the issue in the meantime. It's likely something to do with how the behavior of Buffer Particles change between Unity 2019 and 2022.
Attached is a Twitter thread by HFCRed explaining the differences and how to "fix" Buffer Particles - problem is, my Buffer Particles are already set up like in the thread.