Found a bug(?), maybe two. Firstly, when killing boss enemies with special drops (i.e. the giant rat with their key to the first-floor sewer door, major bosses with superior ability crystals, etc) if you quit without saving after beating them, they can effectively be registered as "defeated" even though you didn't save, and thus won't spawn again, though their drops will be removed from your inventory as you didn't save with those. With that said, does anyone know the code to spawn in the orange and black dragon-lookin champion, Champion Miko I think it was? As for the second potential bug, the aforementioned champion enemy would frequently spawn in front of the alchemist's shop in town blocking the door, along with another npc named Sahara who had default dialogue, and it feels like neither of them were meant to show up there.
Edit: speaking of the giant rat, or rather the Unusually Large rats that replace her once you beat her, if you target any of the supporting rats that they bring to the fight, the ULRat will gain a significant amount of size when they (the supporters) die, even though there doesn't seem to be any skills activating. I'd assume it's something like the Grow on Defeat ability, but it doesn't show anything like that proccing. Might be because I'm fighting in passive combat rather than active, but iunno, thought it was worth mentioning in case that isn't supposed to happen.
Edit 2: okay, so it was Champion Maki, not Miko, but either way it just turns out that her spawn conditions are as unknowable and unpredictable as my sleep schedule. Again, for how massive she is, spawning directly in front of the apothecarist's shop door in the starting zone feels very much unintended.