It was a bug that on high resolutions the zoom level on the minimap changed, that bug is fixed and now it looks like it did 20 years ago. And how KeeperFX looked a few weeks ago in 640x400 mode.
EDIT: I loaded your save and it very clearly is the thing limit. You have like half the map as a treasure room filled with gold. All those gold piles are things, at this point it would be hard to even get rid of it since selling the treasure room would leave gold piles on the floor. Don't go so extreme in the future is all I can advice.
EDIT2:
At the bottom there's info on what's not 'released' yet:
https://github.com/dkfans/keeperfx/w...nds#unreleased
In any case, I added the missing marking controls.
EDIT3:
Could you confirm your sight of evil issue does not have to do with your thing limit? On your saved game it indeed does not show up because you're at the limit already, but for me it shows up fine on other maps. What about you?