Actually the title says it all.
I have two new Windows 10 installations on two different Notebooks. Mouse (Touchpad) works fine, scrolls fine, all is good. Only in the Settings-app (the cogwheel) in both installations I have to point the mouse pointer on the right margin for the scroll bar to appear and move the scrollbar by clicking and holding it and moving the mouse.
I cannot figure out why or how to fix this and I am not able to search successfully, because practically every fix regarding Scrolling issues contains "Setup-app", so I don't know how to specify the problem description as pertaining only to the Setup-app.
So any pointers as to a fix or to a successful search would be very much appreciated