Windows – domain joined Windows 10 – Disable password requirement on wake up

I've been trying to disable Windows 10 Pro (Build 15063) from prompting for my password when my computer wakes up for a while now, and can't figure it out.

I have a few PCs joined to a Windows domain (2 x 2016 DCs) and tried setting a GPO to disable the Require a password when a computer wakes (plugged in) (and also the '' battery one) setting under Computer Configuration > Administrative Templates > System > Power Management > Sleep Settings.

The policy gets applied properly on my PCs, but whenever I put a PC to sleep, it asks for my password no matter what.

Here's the results of rsop:

Looking at the Sign-in options screen, I see the following, and cannot change it. It stays as Authentication is required when this PC wakes from sleep (in red) even if I remove all policies related to authentication (I even tried to clear all GPOs):

I'm kind of dumbfounded at this point and ready to call this a Windows bug. Does anyone have any clue?

Edit 1
Tried to re-format my main PC. It allowed me to pick not to require a password in the Sign-in screen before I joined the domain, as expected (and didn't require a password on wake up). As soon as I've joined my domain, I was unable to pick an option (as expected, but I was required a password on wake up).

I used dcgpofix to reset my main DC policies, and disabled all of my policies. I still couldn't select the option within the Sign-in settings screen. It did allow me to select not to require a password within Power Options, but it keeps on asking me a password.