MINOR SPOILER ON BOSS NAME AND MECHANICS
I cannot complete the first boss encounter (BRUMAK). The boss fight requires you to shoot the fuel tanks on the bosses back. Once shot the boss turns around and faces whoever shot him and someone else has to shoot him in the back and so and so on.
A couple of turns into the boss fight (I seen it happen on first and 3rd turns so it seems random) you TAB button (or even triggers on controller) stop working and you CANNOT switch to your units at will. I am forced to complete actions of whatever unit is currently selected before going onto the next one. This makes the fight impossible to complete as the boss has a HUGE HP pool and constantly needs to be shot in the back to damage the fuel tanks.
I tried restarting the encouter but still having the same issue. Any find a workaround?

