Hi,
Shot into the blue: Do you have any "not" permissions (not just for the items in question, but potentially
any)? There's apparently a bug with those that can affect catalog items (it did for me), we had to migrate away from any
not permissions and replace them by other permissions to get (among other things) our 12.x user catalog to work properly.
There were some other quirks, please see
this post for details.
Br,