Hi
Taladren, sorry for the lack of info on the forum.
I'd have to look at the code but it's likely the script isn't sending a signal to the journal system to mark it as complete.
Release 0.5 is a buggy mess that I should have postponed releasing until it was in a more complete state, so there are a number of bugs in the game that have been plaguing players. But The endstate of Kahar isn't even fully fleshed out yet, so it's not really possible to complete the quest as it.
Again, I apologize, it was a poor decision on my part to release.