start wayland session right click on some icon in the system tray (sound, network, clipboard, notifications, etc) the context menu overlaps the system tray. Under X11 the context menu opens above the system tray instead.
Reproducible Plasma: 5.13.1 Apps: 18.04.2 Frameworks: 5.47.0 Qt: 5.11.1 Kernel: 4.18.0-1-MANJARO OS: Netrunner Rolling Video: Intel 4400 Driver: xf86-video-intel 1:2.99.917+831+ge7bfc906-1 Mesa 3D: 18.1.2 Screen: 1600x900 Xorg: 1.20 Wayland: 1.15.0-1 Wayland Protocols: 1.14-1
Right click menu of Keyboard Layout is displayed above it's tray icon Distribution: KDE neon Developer Edition Kernel: 4.15.0-29-generic Plasma: 5.13.80 Apps: 18.11.70 Qt: 5.11.1 Frameworks: 5.48.0 Graphics: Card-1: Intel driver: i915 v: kernel bus ID: 00:02.0 chip ID: 8086:5917 Card-2: NVIDIA GM108M [GeForce 940MX] driver: nouveau v: kernel bus ID: 01:00.0 chip ID: 10de:134d Display: wayland server: X.Org 1.19.6 driver: modesetting,nouveau unloaded: fbdev,vesa alternate: nvidia compositor: kwin wayland resolution: 1920x1080~57Hz OpenGL: renderer: Mesa DRI Intel UHD Graphics 620 (Kabylake GT2) v: 4.5 Mesa 18.0.5 compat-v: 3.0 direct render: Yes
I can also see this bug. Plasma: 5.14.1 Apps: 18.08.2 Frameworks: 5.51 Qt: 5.12-beta2 Kernel: 4.19rc8 OS: Arch Linux GPU: Intel HD 4400 Intel Modesetting driver Mesa: 18.2.2 Xorg: 1.20.1 Wayland: 1.16 Wayland Protocols: 1.16
cannot reproduce on neon dev unstable. Probably fixed by https://phabricator.kde.org/D17826