There is nothing wrong with the talent explanation itself: after the damage or healing spell/skill of any member of your squad is critically hit, you have a 100% chance to get the combo point of the current target, and this effect can only be triggered once per second.

The BUG in 3.05 is that the last sentence "This effect can only be triggered once per second" is not implemented, and it can be triggered many times per second. WLK has fixed this error without weakening or strengthening it.