Empty space between the scrollbar and the border of the filechooser window
There is an empty space between the scrollbar and the border of the filechooser window.
This issue is not always reproducible. I can't reproduce it with gedit, for example.
gtk 3.24.13 on Arch Linux
open Firefox or Chromium
load any webpage
press ctrl+s
![filechooser](data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==)