I've seen it several times now. Example In a previous video I did, I saw tank shooting over double layerd walls, so it wasn't an instance of tanks shooting through cracks. Anyone else been seeing this? Or is it intended?
Only happens when tanks are shooting from far away, since they are using ballistic arcs. Don't think that's a bug though. I mean, why SHOULDN'T they be able to shoot over walls? Walls primary function is still pathing blocker. I know, people like to use it to soak up damage in micro fights, but I'm perfectly fine with walls simply failing against tanks for that specific task. Way too much micro anyways.
I have seem them firing over small mountains using balistic arcs at long range. It does make sense to have a arc at long range. Not having a fancy laser gun does have it's advantages Primary purpose of walls is path block and sniper bot blocking.