Turns out, the geniuses at Gnome/GTK/GIMP came up with new and flaky sliders (not *quite* as bad as the disappearing scrollbars, but close). These allow the slider to work as expected if you employ the top half of the slider, but not if you use the lower half, where the pointer turns into a double-headed arrow and does God-knows-what. Seems to me that UI design got about right at, say, KDE-3.51, but the children keep screwing around with it instead of adding actual features. And in any case, conventions have been flung down and danced upon, so the idea of window controls behaving identically from application to application are about where they were with DOS 4.1. dep Sent with ProtonMail. Because privacy matters.