Qt 5.13: Segfault on exit with Windows + QtWebEngine

With a quite minimal QtWebEngine example like this:

    from PyQt5.QtWebEngineWidgets import QWebEngineProfile
    from PyQt5.QtWidgets import QApplication
    from PyQt5.QtCore import QTimer

    qapp = QApplication([])
    p = QWebEngineProfile()
    QTimer.singleShot(500, qapp.quit)
    qapp.exec_()

I get a segfault on exit with Python 3.7.4 and PyQt5/PyQtWebEngine 5.13.0
on Windows 10.

When I downgrade to PyQt5 5.12.3 and PyQtWebEngine 5.12.1 things work fine.

Unfortunately I haven't been able to get a reliable stacktrace. Here are some
examples of the stacks I got: https://paste.the-compiler.org/view/5774da86
I don't think they really make sense though.

Florian

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