Don't apologize for reporting in bugs :) Were you able to reload the fight after closing the game or does it consistently soft lock at this point?
Oh, yeah, after I quit out and went back in to Continue, it took me to the choice screen for the fight immediately preceding the boss. The boss fight went differently afterwards so I didn't have a chance to repeat it as a test, though.
Cool, that's good to know! Appreciate you reporting these in :)
