"I do not realy sure where to post it, sry if missed.
Deathknight's talent Lichborne does not remove polymorph, sap and blind. I can use Lichborne while polymorphed saped or blinded, but it does not remove them.
3.1 patch notes says: Lichborn now correctly grants immunity, and will break all effects to which Lichborne makes you immune.
Since Lichborn makes you undead, DK become immune to thouse croud control effects and as 3.1 patch notes says it should remove them.
Other cc effects: Sleep(Wywern sting) and any kind of fear removing correctly.
Hoping to see some answer from blues and sry for bad english) "