Not really a bug, but an annoyance...

[zelurker]

visibility problem on some levels, like the under belly (if I remember correctly the name, the 2nd one with dwarves where the mouth is) you just can't see the exit of the level sometimes because it's hidden below the plants. I had to use the big map a few times in this case to track the red dot which shows the exit.
Something to make it more noticeable would be nice...
(or a 3d engine to be able to look around, with animations and texture packs... just kidding !)

[edge2054]

That sounds frustrating but do you know how to auto explore? It's z by default and should take you to the stairs.

[zelurker]

Oh thanks, didn't know it found stairs too, I thought it was just to search for monsters... !
Easier than a 3d engine for sure !