if you've done your warlock quest (tainted parchment - to go visit your class trainer) in say the undead area, questie will show it as not done in the orc area (quest id 3090 - undead version is 3099).

since they have different quest ids, the easiest solution would be to do an if questid is complete, then autocomplete the other one.

Thanks for reporting! will look in to this soon