I found a land mine lying on the ground, and when I picked it into my hands, the character's left arm takes a rather weird shape, where the whole arm is pulled back and stretched backwards.

I took some screenshots of the bug as I think you would get a better view of the problem, but I don't know how to show them to you.

This problem happened 2 times so far on 1 server, though I do not recall seeing this bug occurring as I remember 1 time where I picked up a land mine but did not cause the bug. Maybe it could be cause I was on a different server, or it was back in 0.54. {F31708}