An anonymous reader said, "The scrollbar-jumping decision is a mind-numbinglingy stupid UI
decision. I'd love to know why the GTK-3 Firefox people thought it was
such a good idea (along with removing the up/down arrows on scrollbars).
It smacks of the kind of totalitarian UI thinking that drove GNOME 3.
It IS fixable by adding a line or two to .config/gtk-3.0/settings.ini
(INI??? This isn't windows for god's sake...), but it should never have
come to that."