I had the same issue but I think i fixed it
Seems to happen only when right clicking, doesn't have to do with aiming down sight.
Becoming dead usually fixes the issue until right clicking on your next life.
Doesn't always happen, seems random.
I verified my game files (steam) and a few corrupted files were found and fixed and it hasn't happened in a couple games now. good luck!
just kidding its still happening. I've only noticed it on Iberian and Cairo...
Just happened to me on Mirak Valley too
Yes, it is not map dependent, I have it on any maps.
