Can you change it so that you can't get stuck behind the invisible walls in Baal's fight? I have done that after getting hit on multiple occasions.
I'm not an expert on coding or programming, but if I were to make a guess at what's happening, I think either the knockback I receive from certain Baal's attacks is stronger than the walls can push out or I'm just hitting some sort of sweet spot on the walls that puts me behind them.