Left sidebar - real estate on smaller screens

I am using display zoom settings for enlarging everything on the screen, for the sake of visual comfort. Half of the left sidebar is not scrollable (as shown in red on the screenshot) and this leaves too little real estate for viewing the scrollable part (shown in green on the screenshot).

It would be great to have settings for switching on or off what gets displayed in the not scrollable part, or better yet, just have have both parts scroll as one.