Hello,
In Unity 2023.2.15-17 I have constant crashes from UnregisterXXX methods. From crash dump and log debugging this is because there is null ptr returned from Unity!BatchRendererGroup::MaterialInfo::ResolveMaterial. I think this is because Addressables already unloaded resources (mesh or material), I can introduce “safe” flow in my own code but when exiting play mode the flow is driven by Unity, and there is no fix possible for this Destory flow. In Unity 2023.2.7 there was no crash like that.