I had the new Competitive playlist quest from Shaxx in my log for all characters, though I hadn't moved my cursor over it on my Warlock yet. I then went for a promotion match series on my Hunter, and lost enough of them to fail. The quest then vanished from the logs of all my characters, but my Warlock's log seems to still think it was un-checked, so my quests tab in the Director flashes constantly now, no matter what I do. Is there a way to get the quest again, if only to get my log to stop constantly flashing?