Here's a weird one: On a couple of screens of my quest, one enemy will inexplicably use tiles from page 1 of the tileset instead of the ones they're supposed to use -- so it flickers through empty tiles, the original minitiles, Ama, and so on. 😕 More confusing yet, if I go to a different map and return, exactly which enemy on the screen is affected can change. The only thing these screens have in common that I can see is being on the same map and DMap and having more than one enemy type -- but other screens meeting those criteria don't seem to be affected...
The screens north and west of the starting screens are the ones manifesting the issue: http://www.arinoru.net/~pteryx/a-simple-test.qst -- Pteryx