Starting today i have noticed at least 5 times now when the Group Finder becomes ready while i happen to have open an in-game window open like a crafting station. The dungeon ready pop-up never shows up and immediately goes to the notification panel. Then when i try to "ready" or "decline" through the notification panel .. any interaction with the notification just does absolutely nothing. Effectively blocking me from accepting the dungeon group.
At this point it becomes impossible to leave the dungeon queue or requeue as the game is still expecting me to accept or decline the pending ready dunegon queue.
After several minutes the dungeon queue will finally timeout and i will be dropped from queue since i apparently never accepted the pending ready dungeon.
I have never seen this behaviour before, but it's rapidly becoming extremely annoying as it effectively disallows me from doing anything in the game that involves game UI windows for fear i get yet another stuck ready dungeon pop.