Bomb/rocket craters display in front of tanks, not on the ground below them, so that when you miss once and try again the sprite actually blocks your view of the GV entirely.
In the hangar, the convergence lines, distance, and "+" sign (the part you drag) disappear behind the bullseye target on the back wall of the hangar, instead of displaying over it.
I don't know if this is a tracer sprite issue or if this is a round ballistics issue: Sometimes when you have dead-on perfect shots in a GV on another GV, the round will simultaneously bounce off upwards (ricochette) and pass through the GV and hit the ground on the other side of it (have film of this). This was either Tiger vs T34 or T34 v Tiger, can't remeber I tested both when it happened. I think it was T34 v Tiger.