Binary metadata mapping not working on a new document type extended from Picture

When creating a new doctype that extends Picture, the Binary metadata mapping (IPTC for example) should be natively working like it does on Picture.

To make the mapping working, the new doctype needs to be added in XML Extension:

<extension target="org.nuxeo.ecm.platform.actions.ActionService" point="filters">
<filter id="hasPictureType">
<rule grant="true">
<type>Picture</type>
<type>My_New_DocType_Extends_Picture</type>
</rule>
</filter>
</extension>

This action shouldn't be needed.

Example in https://connect.nuxeo.com/nuxeo/site/studio/ide?project=glevents-dam-demo