First of all, bomies have problems with doors, especially after they've been swimming. they end up "vibrating" a couple of pixels left, a couple of pixels right, and not entering the door. That's definitely a lot more serious than the next one. I was reading the specs for the .nw format and noticed the interesting way of representing signs, so I did the only sensible thing: I went immediately into the Graal level editor and added a sign with the text "ENDSIGN". I saved it, quit, reloaded the level, and lo and behold, the sign was blank. I don't think this'll cause too many problems, per se, but hey... it's a bug.
Anyway, there's my two bugs. GOD it feels good to finally be able to post...