This was causing unrelated objects to lose their registration in a hyper rare case.
The process went something like:
when object foo is registered to something and object bar is registered to the same object with a different
signal it will remove foo's signal only when foo is the only one registered to the object with that signal
Why it's good for the game
This was breaking #58918 when blood wasn't qdel'd post test. I'm so happy I found this.
It's a rare case, so I doubt it'll effect a lot of things, but I can trust UnregisterSignal again, which is very nice.
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