The redshift widget/applet is not working under Wayland sessions. Not sure if this is the right place to put the bug, but would be nice if there could be some workaround to make it work in Wayland.
(In reply to David from comment #0) > The redshift widget/applet is not working under Wayland sessions. Not sure > if this is the right place to put the bug, but would be nice if there could > be some workaround to make it work in Wayland. Marking this as fixed - Plasma 5.12 or later - https://www.kde.org/announcements/plasma-5.12.0.php: "Plasma on Wayland cares about your vision, so an exclusive, Wayland-only feature called Night Color is also available. Night Color integrates with KWin and removes blue light from your screen at night-time, functioning as an equivalent of the great Redshift app that works on X."