Hey u Should check Celestial avatar works perfect by f5 but if u clik the skill with the mouse it looks like it enter to the avatar mode and go out from it instantly so u get the aparence of being on avatar mode but u wont get the skills (it may be since the f5 dosnt have any cooldown that u enter the form and go out inmidiatly, maybe using a 1 sec cooldown or 2 sec will help)