When I change the command inside a custom button as a test, the changes are saved on exit without asking, even when the Rhino window is closed without saving.
That has and will cause unintended changes of my custom button.
Rhino should ask me if I really want to save my changes of the custom UI before closing, also when I save the Rhino file. Maybe I want to save the file, but not the changes of the UI.
After altering a toolbar I would like to have the option to save the changes in the UI without closing/saving the Rhino file am am working on.