The DeviceLock Nightmare

We recently observed some unexpected behavior when deploying a MaxInactivityTimeDeviceLock policy on Dell machines running Windows 11.

The PCs are entering a sleep/locked state after less than ten seconds of inactivity. We have changed the value to zero, and manually disabled Device Lock via PowerShell, but the behavior persists. Has anyone run into this before? This issue is described in this blog post, but we can't seem to figure out remidiation.