I noticed that with the Lingering Concealment perk equipped, Camo Cloak's charge keeps draining during the 2 additional seconds of invisibility, which was not the case before. Furthermore, with the Shadow Stab weapon perk for the combat knife, Camo Cloak stays active and drains its charge while charging Shadow Stab, only deactivating after releasing the attack, which is also different from the main game.  

If either of these bugs are intended, please reconsider implementing them, since that would heavily nerf the melee sniper build.

I want to second this comment, Ive also submitted a bug about shadow stab, once the attack sequence is started is when the camo abil should deactivate, but currently on PTS it keeps draining whilst charging shadow stab, meaning we have to wait 15-20 seconds before we can re-use shadow stab from stealth. In current live version if your good and quick enough, I could shadow stab again with 5 seconds after finishing the previous animation, which felt really good and plays into rogue melee playstyle, I hope its bugged on PTS cause if this is the new way of things as op said it will nearly kill shadow stab playstyle...