If you have an open quest in your quest log, there is a chance that it will complete when you accept one of your (in my case) hundred reimbursed outfits you received this morning.
YOU CAN AUTOCOMPLETE A 20th COMPLETION REWARD IN THIS WAY.
I personally lost out on a 5th completion reward for Master Artificer; instead of another pair of alchemical handwraps, I got some junk outfit I've never seen before in its stead. I would have probably rage-quit if it was something more tedious such as a 20th Demon Queen or CitW.
I'm currently getting the anticipated run-around with a GM ticket, but for the rest of you BEWARE.