I have found the NPC named “Kres” in The Writhing Mired of Hawezar is missing dialogue. If you interact with him, his dialogue box will have the side quest (if not completed already) and then 2 more options. The first option reads !!Missing!! - - 1:MenuLabel and the 2nd option is normal, saying “How did this happen to you?”.
if you click the 1st option you get the eye above your head like you are in a cut scene, but you cannot do anything and nothing happens. You must force close the game to conitnue.