In creative trying out the new features, when my player's arm suddenly dislocated itself to the left. I've taken a screenshot. I doubt this is an addition, and I'm not sure what causes this issue. Punching things and using items doesn't seem to resolve the problem. But pressing f5 will refresh the arm back into it's normal position.
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[media]
Confirmed, saw that in docm77's Snapshot video.
Happened in 0.2.1 when riding on Minecart a block on it will glitch its arm on PE