Cannot see Role as "Contained" after using it in LDAP Role mapping

NXRM OSS 3.13.0-01
Also, I've set my LDAP User and Group settings to use Dynamic Groups

• create Nexus role A
• create External role mapping: LDAP (let's call it B) for LDAP group "somegroup0" and have role A contained in the mapping

So, at this point, role B (an LDAP mapped role) contains role A (a Nexus role).

• open role B

Note that the contained roles no longer lists A.

Diagnosis

Appears to be a UI bug only, the data for role B is saved correctly in the Nexus database.

Workaround

Use the web browser refresh button to refresh the UI to see all updated role assignments.

Expected

Selecting a role should always display the actual assigned roles and privileges.