Class ability not working..

So in the beta once i gain enough experience with a class lets say engineer the class ability on the right side would turn green and unlock to use it and it would show the key (6) to be able to use it..

In the release today it does not matter what class i use the moment i get the experience and it unlock i cannot use the ability, When it unlock it turn green and there a tip saying that i can now use this ability then turn back gray and there is no number 6 showing, i cannot use it. 

there is 2 picture here attached, showing the ability fully unlocked but its just gray with the white bar (experience bar) showing..