Setup:
- Enable probe plugin
- Configure charge pump pin and port
- Enable "Charge pump always on"
- Save settings
- Close UCCNC.
Bug reproducer:
- Restart UCCNC.
- Confirm that charge pump signal is active.
- Go to Probe plugin screen, click "I" for help window.
- Leaving the help window open, close the main program window.
- Answer "Yes" to the dialog confirming that you want to close the program.
At this point the program is no longer active, but the charge pump is still enabled. Close the help window and the charge pump will turn off.