I feel like I'm missing something here: I have younglings that are not in combat, just waiting around with their health slowly dropping down. I have two empty regeneration chambers on the same planet. There are no enemies, no combat, this is in fact being tested on a brand new game and the first wave hasn't arrived yet. But my younglings are merrily expiring in little explosions with nary a regard for the chambers I built specifically for them that lie less than a forcefield's diameter from them. I'm sure that in some previous game a long time ago they actually *used* the regeneration chambers, but for the last however many games, they generally haven't. Is there a setting I changed somewhere and need to change back?
Edit: Figured I'd supply a save game, but having restarted and now producing *only* younglings, they are using the chambers. It's very weird. It seems like maybe if there are a lot of other ships on the planet, the younglings' AI skips the check for a regen chamber.
I'll try again and get a save where it's happening as it seems like there's a definite bug.