When you klick on a bed when doing something (at a very fast pace) your arm will stand up pointing to the left of the screen. But this bug is very rare, and have to be very quick to do it. I last saw this bug on 1.16.3 a few weeks ago.
MC-202519
Bed Bug
Resolved
Duplicate
0
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However, we are already tracking this issue, and this report is a Duplicate of MC-96880, which is a report that has not been resolved yet.
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