Greetings, community. I am experiencing an issue that I think might be a bug but want to see if anyone can spot an issue on my end before I report it. I have a form that gives a permissions error every time a user tries to save it:

The form is saving to a table named RoleOffice and is a mapping between two other tables (Role and Office). The table permissions are set up as follows for users in a role I created named Admin; note that Read/Update/Create/Delete is enabled on RoleOffice:

The user has been assigned to the Admin web role, so by my read, this should all be working. One odd thing I noticed in the Design Studio when I selected permissions for the form is that Power Pages doesn't list the permission I have set up. It will show "top-level" permissions, but the RoleOffice child permission doesn't show:

Anyone have any ideas?