Steps to reproduce the issue

1. In backend go to: System->Global Configuration->Articles->Permissions
2. Set the acl permissions for a user group with backend access to :
   Create->Allowed
   Edit->Denied
   Edit Own->Allowed
   Edit Custom Field Value->Allowed
3. Create a field group as Super User
4. Create a field within this group as Super User
5. Login as user of the resticted group
6. Create a field within the previously created article field group
7. Return to article fields list view

Expected result

1. The field created by the super user should not beeing editable for the restricted user.
2. The field created by the restricted user should be editable for both.

Actual result

1. Works
2. The field created by the restricted user is displayed as selectable for it's creator but when the user
   clicks on it, he will get a permission denied error.

System information (as much as possible)

Joomla 3.9.23

Additional comments

Maybe thats just a naming mistake:

The field controller in com_fields administrator section trys to get the user id of the fields creator by the field records 'created_by' attribute, which is not present in the db. Instead the db field holding the creator id is 'created_user_id'.