I often get a bug where tactical combat gets stuck with the turn on the side of the enemy, with the enemy at 0 hp. The cause for this bug in my case is because my hero does damage to the enemy when they damage him (it is an item he is wearing). Sometimes, when the enemy gets killed due to this, the enemy still gets a turn, but is on 0 hp (but the unit is gone from the game field). If this happens, tactical combat gets stuck, because nothing happens. The only way out is to press the button 'auto resolve'.