QUnifiedTimer::updateAnimationTimers() crashes when QApplication is recreated

QApplication is created deleted in a for loop and the second run crashes when the QML XAnimator is running.

Please check the attached sources code.

When the restart period is longer than the animation period, then it is not crashing, the animation needs to be running while restart.

SIGSEGV happends in QUnifiedTimer::updateAnimationTimers() at animation->updateAnimationsTime(delta); animation is probably not a valid pointer.

main.cpp:

static void testIt( int argc, char **argv ) {
    QGuiApplication app( argc, argv );
    QQuickView view;
    view.setSource( QStringLiteral( "qrc:/timercrash/Main.qml" ) );    view.resize( 1024, 768 );
    view.show();
    QTimer::singleShot( 1000, &app, [&]() {
        app.quit();
    } );
    app.exec();
}

int main(int argc, char **argv)
{
   for( int i = 0; i < 10; ++i ) {
        qDebug() << "start iteration " << i;
        testIt( argc, argv );
        qDebug() << "end iteration " << i;
          }
    return 0;
}
Main.qml

import QtQuick

Rectangle {
    id: root
    anchors.fill: parent
    color: "lemonchiffon"    Rectangle {
        id: xmovingBox
        x: 0
        y: 0
        width: 50
        height: 50
        color: "lightsteelblue"
        XAnimator {
            id: xanimator
            target: xmovingBox;
            from: 0;
            to: 100;
            duration: 2000
            running: true
        }
            }
 }