On Plasma Wayland the Desktop pager is missing. This has been consistent as long as I have used the Wayland session- 5.7 through 5.8.1. Reproducible: Always Steps to Reproduce: 1.Add pager to panel under Xorg 2.Log into wayland 3.Pager is missing OR 1.Drag the pager to the panel 2.Pager does not appear Actual Results: No pager Expected Results: Pager.
Please see the Plasma 5.8 errata for missing features and known bugs in the Wayland session: https://community.kde.org/Plasma/5.8_Errata#Wayland
I just tried uptodate tumbleweed (Plasma 5.11.4, Qt 5.9.3) and had no (visible) pager. If I unlock the panel and presss the panel's menu button the pager becomes visible, but only showing one desktop instead of n.
OK, I just found https://community.kde.org/Plasma/Wayland_Showstoppers#Plasma .