I recently had an issue where applying restrictions to a macbook pro on Big Sur 11.2.1 would fail. Upon contacting support, the issue is within the profile.
Basically, when you create a profile for restrictions, go to 'Security & Privacy' and go to the 'privacy' option. Create a bogus contact and save it. Your profile will now install properly.
The credit for this goes to Jamf Support as they provided me with this information and also advise it is being looked into. I hope this helps!
Credit to: Meganne L
Case ID: JAMF-2282586
