> Hmmm... It works for me on both CentOS 7 (Firefox 60.2.1) and Fedora 28 > (Firefox 62.0.3). > > As per the linked documentation - What happens if you SHIFT-CLICK on the > scroll bar? On my systems I find that SHIFT-CLICK on the scroll bar > produces > the "warp speed" behavior, exactly as expected. > > > https://developer.gnome.org/gtk3/unstable/GtkSettings.html#GtkSettings--gtk-primary-button-warps-slider > > In Firefox 45.4, shift-click reverses the behavior, so it scrolls a page at a time. It ignores the primary warp setting. I also checked in Terminal, and it respects that setting. With primary warp turned off, it moves a page at a time, regardless of whether I hold shift. With primary warp turned on, it warps regardless of whether I hold shift. I'll try updating Firefox. -- Elliott Balsley Application Engineer *ALT Systems* Office: 818 504-6800 Mobile: 210 414-7893