The new "related_files" field not working for non admin users

[frankschuessler]

The creation of file references to existing files does not work if not logged in as 'admin'.
An "Access Denied" error is thrown when i try to add a file to "related_files" as a normal BE user.
I created a user group with all rights except 'admin' and it does not work.
Maybe anybody can reproduce this behavior?

[fabarea]

I could reproduce this but don't have a solution... it needs to be debugged to understand the exact cause.

FYI, I had to tweak the TCA to have the relation to a file working, to say the feature is "at the border".
https://github.com/fabarea/media/blob/master/Configuration/TCA/Overrides/sys_file_reference.php#L6