Afaik, the bug was not really fixed. It is somehow caused by the artillery view python code and happens only when you are moving your vehicle while the artillery view is active. To compensate, we made a change so you can only open the artillery view when your vehicle is standing still. Not sure though what happens if you open the view and start moving. I only know that I try not to do that because I also encountered this bug a few times now over the last years and it sucks because only a game restart fixes it.