12/12 03:33:34.282 An action was blocked because of taint from Ace2 - orig()
I would find which addon is using Ace2 to interfere with static popups. Maybe just disable Ace2 at the character load screen and see what other addons become disabled. Or grep through the addon folders to see if any of your other addons have ace2 embedded.
Once you know which addon is involved, debugging can proceed from there.
I still have some Ace2 addons myself and have never had a problem logging out, so it's not going to be Ace2 itself that's the problem. The way Blizzard taint tracking works, libraries end up getting blamed for everything that *any* of their client addons do.