I’ve been having this issue with any plugin that has influence with RunService’s Stop() function. I also had seen this bug happening to other people as well.
Here’s some examples and evidence:
Me trying to desperately control my camera after the crash in Blender rig exporter/animation importer By Den_S
People sending me bug reports of my plugin which uses the function
Quick simulation of what they experienced
Piece of code that’s causing it all