Popen subprocess still broken?

we are running python 2 and psychopy 3 combination for similar reasons as described in

when an attempt is made to play a movie with ffmpeg, popen fails with
windowsError (errror: 5) access is denied. this happens in execute_child.

as far as I understand from

the compatibly issue has been resolved.

I am trying to use psychopy 3.2.4

Is there a problem with the setup or the problem was not fully fixed?