Plague form
from wiki
Unlike a stun breaker, it does not remove effects that are already in place, although many skills granting stability will also remove stuns
so if skill doesn’t say it breaks stuns then it doesn’t, only prevents new stun.
Plague does have an advantage, though, in that even if you are CC’d, it continues to pulse anyway, so knockdowns, dazes, and the like actually don’t affect your output in Plague, even if Stability is removed.
Stability is not a stun breaker.