Error Embedded entity Attribute of FetchGroup ... is not mapped

ValidationException:
Exception Description: Attribute details of FetchGroup(address){address => {class java.lang.Object=FetchGroup(address){deleteTs, name, id, version, deletedBy}}, details, id, version} is not mapped.
Why? Here’s minimal sample that reproduces error. Error.zip (308.2 KB)

What did I do wrong?

The problem appears if
An embeddable entity named AddressE has attribute named address
An entity named E has attribute named address of type AddressE
So address in AddressE overrides address attribute in E