Just found a bug that I found rather odd... Apparently, selecting 'Save and continue' under certain circumstances can drop your HP. As can going down stairs. Core+DotDG+YHTNTEP. On level 13 (although I'd noticed this before, this is just where I started experimenting). Have Cure, Diggle God of War Blessing, Lesser Szygzy and Mark of the Black Eyeliner active. Every time I select 'save and continue', my HP immediately drops to either 118 or 116 from 136 or 134 (max HP dropping due to Cure use). And going down the stairs to level 14 consistently drops my HP too, to 114 from 132 (another Cure use). However, going up the stairs and back down again /at/ 114HP, in that case, doesn't drop it further - but if I Cure again, back down it goes. And on level 14, I ate some Fairywodgers, which boosted my HP to 120 or so, walked a few steps, autosave happens...HP right back down to 114! And going from level 14 to 15, down stairs, once again caused the HP to drop back down to 116 from 136. So there's a consistent 18-20HP drop when an autosave happens, you save the game, or you go down stairs. (And just killed Dredmor. Only died four times getting to him...but one of those was because I didn't realise caltrops would hit you as a batty, and another was a misclick trying to close the door on the room ol' Dred was in that made me enter the room instead.)
The HP loss is known, it happens when you have a buff that increases your health and/or mana. When you save or use stairs, your health/mana drops by whatever amount it is boosted by buffs. I know the devs know of it but I don't know when it will get fixed.
