As the title says, the ammo magazine for the hunting rifle floats outside of the weapon when it is carried by Super Mutants. The bug is visual only, and it only affects super mutants and not humans. I've included several screenshots of it.
This may have been introduced with one of the Next Gen updates, as I don't believe this bug has been around before. I tested on both the PC and Xbox One version of Fallout 4, and was able to reproduce the bug every time I encountered a super mutant with a hunting rifle. Presumably it's either an animation error with the super mutants or a mesh issue with the hunting rifle.

Attached Files:
Screenshot (16).png
Screenshot (17).png
Screenshot (15).png