Same here - going through the dungeon with two gladiators at the same time results in one of the parties not getting healed properly if you're "looking" at the other. If there are no serious injuries the heal timers expire normally but if you have a party member with an injury or a corpse in the group, the heal timer hangs after he/she's resurrected or healed from the injury and adds a few minutes when you switch to him/her when the rest of the recovery process continues as it should. Same thing can happen if you're going with only 1 gladiator but navigate between the different areas of the game. So the bug is related to the change between the different "healing stages".
I think I tracked this down and the fix will be included in the next update.

Good luck in the Pit!

-Nate-