Problem:
When you are running a script, it tense to switch working directory(wdir) away from the global working directory.
Solution:
The issue turned out to be the run settings, which can be accessed from either:
Ctrl + Alt + Shift + P
or
Tools -> Run -> General Settings -> Default Working Directory
This was still set to the old_user home directory, and not the new user. I don’t know why this didn’t affect other scripts (or why it was still set to the old user) but, when this was changed to new_user, it worked fine and ran with the correct wdir.
Source: Stackoverflow