Different Behaviour In Normal And Debug Run In Threaded Virtualbox

I'm encountering a weird error when running the script in PyCharm's debug mode or inside a Flask app. I have narrowed down my code to the following import virtualbox import thread

Solution 1:

There seems to be some known, unresolved issues in the interaction between threading and virtualbox, see here. I would suggest using multiprocessing instead as I have not experienced any of the previous issues with it.