Hi
Since 1.2 update, my Shadow Cloak ability (Nightingale power) remains active even after 120 sec using it. (despite of the ending spell sound/purple visual effect, I'm still invisible)
I tried to sleep and to change for another Nightingale power at the Nocturnal Sanctuary (not sure about the name) and i'm still invisible when crouching...
In fact, I can benefit now from two Nightingale powers !
I love sneaking but not so easily...
Does anybody experiencing the same issue ?
Any idea to fix that ? (other than waiting for 1.3)
I'm on PC so maybe console could help ?

EDIT : just tested the console command , it did remove the power from my list but I still benefit from it...

I tried, Mines dissapating after 120 seconds, did you do the quest before or after ze patch?

I play on the 360 and when I cast Shadowcloak I dont turn invisible at all. It says in my Active Effects that its going and the aura appears when I cast, but I am not invisible while crouching.

edit: i figured out my problem, GL OP

I did the quest before patching.

I found a way to fix this : a sneak attack or a chest loot performed after the 120 sec stop the effect...

So my new Shadow Cloak allow me to remain invisible permanently, even when opening gates or interacting with environnement after 120 sec, as soon as i don't kill / loot anything...

It still stops for me :/

Also, where is the portal in Nightengale Hall? Karliah isn't even there

You got lucky, then. Unfortunately I find invisibility too much easy-like for a game. I like being invisible but not in a game where I have already possibilities to easy sneak.

Seems you solved your problem.