Thundara not able to be used at certain points.

[Masamune1004]

The timmers unsync now and then, if you restart the game it should fix it.

This.

You'll notice when you use an ability, for example Provoke, which has a 30 second cooldown, that the timer will start on a lower number, like :27. Then when it lights up, you'll have to wait the extra 3 seconds before using it. 3 seconds isn't too bad, but sometimes it gets off by a lot. Last night my timers were bugged 18 seconds, my weaponskills didn't even show the cooldown timer lol.