Several Mechanic bugs / questions

I discovered this bug while at Zakum a few hours ago. If you get stunned while in siege mode in a tank (don't know if it's the same way without the tank), you're able to continue attacking. Even if you stop attacking for a second, and then hit the attack key again, it still allows you to attack while stunned.

Same thing goes for seal, you can still attack, but you keep 100% missing.

While if you would use normal attacks (which you do in tank mode...) , you wouldn't miss at all, but for a Mech, you do miss 100%... It's all very bugged...