Spectral guise bugged

[karmitos]

So recently i was on my shadow priest and i found out that spectral guise wasn't functioning like it used to before. What i mean about this is when i apply power word: shield and use spectral guise, any form of dots or bleeds would instantly take me out of stealth. This isn't supposed to happen and it's really annoying since i cant use it to land surprise fears, or to get away from an opponent. It would be greatly appreciated if you could look into this and fix this.

[Zanniez]

Indeed, I also noticed this bug and there is no sound effect when using it like it should be.