I am on Xbox One.
I was playing Behemoth in CTF when my weapon suddenly vanished from my hands. The reticle was still there, but I couldn’t aim properly, even when switching weapons which were also invisible. Upon death it worked normally for a while, but the bug crept up several more times during the match.
When I did have a weapon visible, however, most of the time, zoom would not stay active, either, whether I was being fired upon or not.