vpython app stopping takes a few minutes

[fohrloop]

Steps to reproduce

• Create script.py:

from vpython import *
b = box()

• Run python script.py on cmd / Powershell on Windows. New tab appears in browser.
• Close the browser tab
• Try to terminate the application with Ctrl-C, Ctrl-D, .. Nothing seems to happen. After few minutes (1? 5? 10?) the script returns to the console.

What would be expected

• Hitting Ctrl-C exits the process immediately.

Versions

• vpython 7.6.1
• Python 3.7.9 64-bit on Windows

[BruceSherwood]

Thanks for the report. I note that there is a workaround, which is that if you kill the browser, not just the tab, there is a clean exit.