Hi Martin,
I create my own sprite with my custom quest mark, then created a sprite atlas and set it to the AtavismSetting and now it is working almost perfectly.
If the NPC Quest-Giver and the NPC Quest-ender are 2 different NPC but from the same NPC Template, The Mark appear
but if the NPC Quest-Giver and the NPC Quest-ender are from 2 different NPC Template, the mark doesnt showup but I can click on the NPC to end the quest with the dialog.
Any clue?