Fwiw I'm getting the same bug on a new save, battle records autosave but the game crashes and I need to reload every time. If you still can't reproduce let me know, I can send my settings and save with discord if necessary.
Edit: I think I've isolated the issue. My current guess is that it crashes whenever the camp is not full after the battle. If it's full, it won't crash, if it's not, it will.
Edit 2: Just had a case where it crashed despite a full camp. I'm confused again. Maybe full camp + non-selected futas? Will test now.
Edit 3: Nope, didn't work. So confusing...