I've had this too. About 10-20% of the time the quest tile is unusable. This is even when I have no quests, not even wildland quests (so it is not the case of the quest tile's quest already being active somewhere else). Devs, please fix! I know I have been a bit overeager in the past, but this is an important polish aspect with Quest Maps, so I think it would be very worthwhile to fix.