There is a bug with axe AA chain and the ambush, you currently need to time your ambush at the very end of the 3rd AA chain or you will lose your ambush skill. This bug is in the game since 2-3 months (as far as i know) and it makes the class feel extremely clunky. In open world it this can be ignored but in raids it makes it really hard to focus on your rotation and on the mechanics.The only way to bypass this bug is disable the AA which feels really bad.