One of the quickest ways to determine whether particular application runs using Xwayland is to resize one of its windows and see how it behaves, for example

While it can be handy for the debugging purposes, overall, it makes the KDE Plasma Wayland session look less polished. So, one of the goals for 6.3 was to fix this visual glitch.

This article will provide some background behind what caused the glitch and how we addressed it.