MASingleOptionDescription + MADynamicObject + #copy

Hi Im running into some real strange Problems (= the image is locking up instantly without ALT + . working) when executing the code below. ^SVACLItem descriptionPrincipal copy stringWriter: SVAsStringWriter; yourself SVACLItems >> #descriptionPrincipal ^(MASingleOptionDescription selector: #principal label: 'Principal' priority: 200) options: (MADynamicObject on: [ PRCurrentContext value in: [ :context | context userManagement principals ] ]); reference: SVPrincipal description; beRequired; yourself. Then I saw that MADynamicObject does not implement #copy (or #postCopy) because it's a proxy and extends ProtoObject but sends it to #realSubject. I don't think this is really wanted for DynamicObjects. So the question is the usual one `Is the bug in my or Lukas' code or do I just have tomatoes on my eyes'? Cheers Philippe