Something I've been seeing a lot in PvP (X1 NA) is that Nightblades, stamina and magicka, are completely vanishing with incredible success and frequency. A magblade cloaking forever is nothing new, but this seems different. I see NB's vanishing while standing in AoEs, with DoTs applied, and they're doing this over and over again.
At first I thought it was just teleporting to their shade that I didn't see them drop, but that's not it because they will sometimes reappear 2-3 feet from where I saw them vanish.
I don't see the Cloak animation and it's happening too frequently to be invisibility pots. Another possibility might be something bugged with the Shadowstrike star in The Thief constellation.
Basically, what I'm saying is that I don't know how they're cloaking so well, so I thought I'd ask. Is there some mechanic enabling this vanishing act beyond Cloak?