Problem loading QML DLL on Python 3.8 when using Python from a Microsoft Store

I'm trying out Python + QML on Windows, and there is a problem with loading qtquick2plugin.dll.

Steps to reproduce

mkdir reproduce-bug
cd reproduce-bug
python -m venv .
Scripts\activate.bat
pip install PySide2

Place the attached main.py and view.qml in this directory (from this tutorial).

python main.py 

This gives the following error

QQmlApplicationEngine failed to load component
file:///<snip>/reproduce-bug/view.qml:42:1: plugin cannot be loaded for module "QtQuick": Cannot load library <snip>\lib\site-packages\PySide2\qml\QtQuick.2\qtquick2plugin.dll: The specified module could not be found.

The file it's looking for exists (directory also includes plugins.qmltypes and qmldir).

It appears to be related to QML, since the two examples on this page work like a charm: https://doc.qt.io/qtforpython/quickstart.html.

Yesterday, figuring this was a mistake on my part, I asked this question on #qt-pyside, where I got the reply:

<cmaureir> I think all the errors you are getting with QML's DLL is due to a change in Python 3.8.x with that we partially solved for the examples and tests. frkleint we would need to fix the qml DLL stuff Can you open a bug report NyckoNL?

So, here goes nothing .

Hopefully I've provided the intel required, otherwise do ask. Is there perhaps a workaround I can apply in the meantime?