[issue38946] IDLE on macOS 10.15 Catalina does not open double-clicked files if app already launched

AndrewGYork added the comment: If it's helpful, I'd be happy to do a screenshare session (Google Meet, Zoom, etc), to demonstrate and explore the behavior. We have a 10.15.4 Mac with python 3.8.3 freshly installed from python.org, Tk version 8.6.8, IDLE version 3.8.3. IDLE fi

[issue38946] IDLE on macOS 10.15 Catalina does not open double-clicked files if app already launched

AndrewGYork added the comment: We have a 10.15.3 Mac with python 3.8.2, IDLE version 3.8.2, and we see similar behavior. Summary: The *second* 'bad' .py file you double-click won't open in IDLE. This seems unrelated to permissions, but a 'bad' file (saved by IDL