import QtQuick

Item {}

MyBaseItem {}

import QtQuick

Item {
    MyDerivedItem {
        MyBaseItem { id: inner } // Won't assert if this has no ID
    }
}

using namespace QmltcNestingStudy;
QQmlEngine engine;

MyBaseItem base(&engine); // OK
MyDerivedItem derived(&engine); // OK
MyMatryoshkaItems nested(&engine); // ASSERT: "0 < context->numIdValues()" in file .qmltc/appQmltcNestingStudy/mymatryoshkaitems.cpp, line 868