Hello:
I have been playing as Proxy on attack on Bridge, and this has happened to me four times in the past week or so. When I have repaired the EV from its starting position, and if I have set a mine while repairing, then gone back to repairing the EV, and if I get in the turret on the EV immediately after finishing the repair, I am unable to fire the turret gun, and at least once I have been unable to exit the turret.