Unable to edit OAuth2 Service if requireconfirmation is disabled

The form can't be submitted unless the acceptrisk checkbox is checked, but if you check that box and submit you get the error Unexpected property 'acceptrisk' requested:

To reproduce:

1. Create a new OAuth2 Service
   1. Uncheck the requireconfirmation checkbox ("Require email verification")
   2. Check the acceptrisk checkbox ("I understand that disabling email verification can be a security issue.")
   3. Save.
2. Edit the new Service
   1. Try and save without checking either acceptrisk or requireconfirmation
      1. Form will not submit
   2. Try and save with requireconfirmation unchecked and acceptrisk checked
      1. Page will return to services index with error in screenshot and no values will be saved.