OS: KDE Neon Dev Stable with updates from 19 Oct 2016 9:00 UTC. When I open System Settings (Системні параметри) and then go to Desktop themes (Тема робочого простору) window gets distorted. This happens only on wayland session. Reproducible: Always Steps to Reproduce: 1. Switch to wayland session 2. open System Settings 3. go to Desktop themes Actual Results: window gets distorted Expected Results: window normal
This KCM has been effectively replaced with plasmathemeexplorer in plasma-sdk. If your bug still remains please roepen it there.
Edit, yours wasn't desktopthemedetails but the plasma theme selection. In any case your wayland issue should be resolved with newer Plasma.