>>53583481I'm being told that, while you can have the dungeon fail you for leaderswapping and getting the protag (that you just swapped away from) KO'd, you can't have that and failing for getting the partner KO'd (like in vanilla) at the same time, even with hex edits.
Assuming nothing super buggy arises, this should be the last fix, fingers crossed. It's kinda weird for the partner to get KO'd but come back at the boss, but it's better than them getting KO'd and disappearing into the aether, never to return.