Just because U don't see it doesn't mean it's not there

ARGO: Before the last wipe when you aimed at a tank and fired, even if the tanks disapeared you would hit it and get a vocal confirmation. Now I can't tell you how many times I have sniped at a tank and as I pull the trigger the tank disapears from view and even though it has not moved, the shot harmlessly passes through it only to see the tank re-appear in the same spot i was in when I fired the last time and hit him.
Now this has happened even on Maus tanks and big arty which I know cannot possibly move out of the way and back that fast so my question is, is this a new bug or flaw?
Thank you for your time