Hello, I see in my Atom light-colored thin lines at the very right and bottom edges of the editor in the fullscreen mode. I cannot find out how to remove them and where they are from (they seem to exist on clean install too). And they are quite annoying because I use a dark theme.
I use UbuntuStudio 16.04 with xfce4.
Update: this is a chromium issue https://bugs.chromium.org/p/chromium/issues/detail?id=478133 and it is not fixed yet. If you have the same issue you can play with your DPI setting or you should wait/help with fixing the bug.
I attach a screenshot: