If this template helps then use it. If not then just delete and start from scratch.
OS MacOS 12.7.2
PsychoPy version 2023.2.3
Standard Standalone? (y) When running python based experiment
What are you trying to achieve?: running basic-brush demo
What did you try to make it work?: clone project, open up in builder
What specifically went wrong when you tried that?:
in older version, basic brush demo shows trace / path of where the mouse was - on new version of psychopy, path does not get drawn / does not show up
used this code:
Ta!