I upgraded from 3.9.0beta1 to 3.9.0rc1 and the 'attribute_identifier' filter was not working (did not filter had all relation at object level)

I tried with the name of the attribute as well as with the ID

Rolled back to 3.9.0beta1 and it worked again.

This was standard fetch such as below.

{def $objects=fetch( 'content', 'related_objects', hash( 'object_id', $node.object.id, 'attribute_identifier', 'citation/author' ) )}