All created Ribbon Containers and Ribbon Components in Ribbon Customization stays under Choose Components from selection. There is no option to remove them, which makes it very untidy if there is a dgnlib file that has been maintained for a while. Please consider an option to remove Ribbon Containers and Ribbon Components from the list on the left side of the Customize Ribbon Window ("Choose components from:" dropdown list)
Please see attached image. If i define a ribbon button, group or tab on the right side (inside the red box) it saves it under left side (within green box). I can delete the user defined ribbon button, group or tab from the red boxed section, but it still stays on the green box section. Deleting it from the red boxed section does not remove it from the green box section. We are maintaining a dgnlib file for all of our custom ribbons and that dgnlib file is maintained for a number of years now which has gone through many changes. There are previously created ribbon buttons, groups or tabs which are no longer used but they still exist in the green boxed section and there is no way to remove them to keep it nice and clean.
Can you please post a screenshot? It will help me make sure it gets to the right team. Thanks!