SetLookup crashes on hierarchy of shadowable properties

import QtQml

QtObject {
    id: self

    component Inner : QtObject {
        property QtObject shadowable
    }

    component Outer : QtObject {
        property Inner inner: Inner {}
    }

    property Outer outer: Outer {}

    Component.onCompleted: {
        outer.inner.shadowable = self
        Qt.quit()
    }
}

ASSERT: "metaObject" in file /home/qt/qt6dev-src/qtdeclarative/src/qml/qml/qqml.cpp, line 1442