[BUG] Copy-paste doesnt work if subclass selector used in Serializable class

[Observer189]

What happened?

Copy and Paste properties doesn't work if you put SerializeReference objects inside regular SerializeField objects.
Per example:

Then when you try to copy TestData in inspector you only get Copy option that can't copy anything related to SerializeReference:

Moreover if in this setup you try to copy just filter:

Then when you try to paste that filter to analogous testData2 you get an exception

Similar problem with SubclassSelector collections. Is this intended or it's a bug? And if it's not bug then can you please add support for such type of Copy-Paste

Package Version

1.6.1

Unity Version

6000.3.7f1