[RoleOptionsProvider] Default Role not visible in MembersGroup object

[scrummer]

Q	A
Bug report?	yes
Feature request?	no
BC Break report?	no
RFC?	no

In RoleOptionsProvider:49 the ROLE_USER-role is proposed as default role to be available for all group objects. This method tho is never called and therefore there are no available roles to associate with groups (unless you configure some explicitly).

With no roles configured

security:    
    role_hierarchy:
        # Pimcore admin  // DO NOT CHANGE!
        ROLE_PIMCORE_ADMIN: [ROLE_PIMCORE_USER]

Result:

With a user-defined role

security:
    role_hierarchy:
        # Pimcore admin  // DO NOT CHANGE!
        ROLE_PIMCORE_ADMIN: [ROLE_PIMCORE_USER]
        SOME_SPECIAL_ROLE: [ROLE_USER]

Result: