I am on Edge, with the zoom set at 80%, and the Add/Update from Core Settings just barely fits on the screen. Would it be doable to reduce the size of this box so it fits better?
Don’t be on edge! (pun intended).
Scrolling should work in that screen though, check out this video:
That said, you can also just disable this screen from showing each time you use update from Core.
You can always modify the download/update settings through menu top left, then Settings!
I’m aware of the workarounds, but since reducing it by like 10% might fix the problem without creating any negatives for anybody else (that I am aware of) then I thought that might be something you’d like to consider.
This screen will also be part of the re-design we’re doing to make everything more compact, so eventually this will be okay.
I thought the problem was that you couldn’t reach the bottom (that scrolling didn’t work for you) 
but it was a suggestion to make it 10% smaller so this popup would work on your screen.
It will probably be even way more smaller when our developer Sven gets to re-work this screen. This project is just taking a bit longer than expected.
Sneak preview:
