Unable to run Debugger (Python) - pressing button does nothing

Not sure if this is related to this issue too?:

Steps for reproducibility: https://www.youtube.com/watch?v=b1RavPr_878

Followed this video exactly, i.e:

  1. ctrl+L, type >try a dev container, select the Python container
  2. Go into the debugger and press the Play button to launch the python flask server - you can see her successful run at 6:04, however when I press it nothing at all happens. No terminal output or errors.

Running the flask command manually on the terminal, by typing it out, I can launch the flask server. So this seems to be an issue with cursors debugger.