I can describe the situation and what I think happened.
I was using JKR to fight a Gen Grevious team that had already had 1 battle in TW, Magnaguard was dead and the rest of the team had TM. Everything went fine until the following series of events.
Bastilla stunned GG with her second special.
My team then focused on B1 and had B1 at 7 or less stacks of battalion. GG was stunned and his TM filled at that moment and he took a turn causing B1 to lose its last stacks of battalion and be defeated. This gave GG another immediate turn, and froze the game. GG didnt attack despite having full TM
Android Samsung S8+