With the SteamVR Beta Update You may experience you Chaperone Not Moving with space Drag Movement.

In order to Fix this:

Option A:
Use version 5.7.1 (live build) and the live build of SteamVR.

Option B:
Use version 5.7.2 (beta build) and the BETA build of SteamVR.

Please Be Safe and use the appropriate version, This should no longer be necessary when the current build of SteamVR becomes the live version.