Steps to reproduce:
EJBCA Administration
Under 'Supervision Functions' click on 'Approval Profiles'
Set Approval Profile Type to: Partitioned Approval
Under Approval Steps set some configuration other than default (you may need to add couple of Administrators to have some options)
click on any of the buttons:
'Add notification'
'Add Field'
'Add user notification'
observe that the configuration is lost and back to default