applets/taskmanager: Improve scrolling usability
Same sort of scenario as !1457: after scrolling with a touchpad, scrolling with the mouse wheel afterwards becomes unreliable. Same bug, same sort of code, thus same sort of fix.
Same sort of scenario as !1457: after scrolling with a touchpad, scrolling with the mouse wheel afterwards becomes unreliable. Same bug, same sort of code, thus same sort of fix.
mentioned in commit d44a3d9b