I have this too, since the launch of the game, on multiple characters. Just to be clear, the ability I want to use does _not_ go on cooldown, but a _global_ cooldown is activated. To make matters worst, sometimes channeling (and maybe casting and instant abilities too) abilities play their animation. For me, the source of this misfiring is: spamming the ability key during (or better:at the end of) the global cooldown (you know, to not lose time inbetween global cool downs, to maximize DPS for example). When I concentrate myself on chaining my abilities with exactly one keypress each, while making sure the global cooldown is really over, this misfireing does not happen. And btw. the preference setting where you can allow abilty use ahead of time during the global cooldown does not have any effect on this problem.

Gerade ist auch meins angekommen von Amazon. Und der DHL Typ hat sogar geklingelt und kam die Treppe rauf. Sonst schmeißen die ohne zu klingeln nur die Benachrichtigung in den Briefkasten... Paar Tage muss ich mich aber wohl noch gedulden, habe erst recht spät vorbestellt.