Change the Size of the scroll bar on a ComboBox

I want to control the size of the scroll bar used in my combo box. I want to make it wider.
I already override On Generate Widget to create more spaced out labels.

The goal is to create combobox that is easier to use on a touchscreen in windows.


How do I change the width of theverticle scroll bar?

Does anyone have any insight into this? The main point of a combo box is fitting many options into a small space, and it’s very difficult for users to navigate those options when I can’t expose a scroll bar big enough to grab on to with a mouse (or VR motion controller). As far as I can tell, there are no options in UMG to change this. Am I wrong?

Up for this question.