QWebEngineScripts with DocumentCreation don't run on view-source page

#include <QApplication>
#include <QWebEngineView>
#include <QWebEngineScript>
#include <QWebEngineScriptCollection>
#include <QUrl>

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QWebEngineView view;

    QWebEngineScript script;
    script.setInjectionPoint(QWebEngineScript::DocumentCreation);
    // script.setInjectionPoint(QWebEngineScript::DocumentReady);
    script.setSourceCode("console.log('Hello World!');");
    view.page()->scripts().insert(script);

    view.load(QUrl("view-source:https://qutebrowser.org"));
    view.show();
    return app.exec();
}