Ran into this pretty bad bug while playing around with custom skins (imported). Basically, changing skin would mess with everyone else's skin as well.
https://drive.google.com/file/d/1n3Awlify6jVtm0Vl74wmRPzBbg_E1pCt/view?usp=sharing
Here is a video [FR] of the bug, hopefully it can help.
Related issues
duplicates
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migrated
I just noticed this is a duplicate bug report, so I apologize for that. Although, I think it is good for confirming this is still an ongoing bug.