It's possible to see beyond the border of a dark area when you are inside one. It is also possible to shoot missiles at monsters visible outside of the dark area.
Fixed for ADOM II 0.3.3. Please send your real name to creator(at)ancientdomainsofmystery.com for it to be included in the credits. (If you were already asked to do so you can ignore this message. Please include a reference to the bug or RFE you are credited for.)