Indirect module property assignments don't work from Group items

Module {
    Depends { name: "cpp" }
    property string myDefine
    cpp.defines: [myDefine]
}

Product {
    Depends { name: "mymodule" }
    files: "file.cpp"
    mymodule.myDefine: ["TEST"]
}

Product {
    Depends { name: "mymodule" }
    Group {
        files: "file.cpp"
        mymodule.myDefine: "TEST"
    }
}