Edge Beta 147.0.3912.26: This policy is blocked, its value will be ignored.

Starting with Edge Beta 147.0.3912.26 as well as Edge Dev 148.0.3928.0 I'm facing the problem, that the so called "sensitive policies" (which need an MDM or AD-Joined Device) are blocked.

Error-Message in edge://policy/ shows up with: This policy is blocked, its value will be ignored.

Using Edge Stable 146.0.3856.84 works fine (on the same machine).

Issue is only related to the so called "sensitive policies" and ist clearly new with Edge Beta 147.0.3912.26 as well as Edge Dev 148.0.3928.0 ... I didn't change anything except updating Edge Beta and Edge Dev ... and as I said: Edge Stable still works fine on the same machine.

The Release Notes https://learn.microsoft.com/en-us/deployedge/microsoft-edge-relnote-beta-channel don't show any new changes regarding those "sensitive Policies". 

So what happened? Did Microsoft break the Policies with those new Versions?