This report refers to a LiveCD KDE spin

When you try to change the theme in the options from light to dark or vice versa, the theme may not change immediately. Also, if a dark theme is selected, kwin may continue to display a white theme. The taskbar may also display colors incorrectly when changing the theme

6.8.0-0.rc6.49.fc40.x86_64 rx6500xt, wayland, two monitors system, 2k 165hz with hdr enabled and fullhd 75hz, no hdr

links to screenshots: https://i.postimg.cc/5955rPyS/Screenshot-20240327-151052.png https://i.postimg.cc/QxXgZpWG/Screenshot-20240327-152807.png