*** If you're not sure this is actually a bug, instead post about it at https://discuss.kde.org If you're reporting a crash, attach a backtrace with debug symbols; see https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports *** SUMMARY Whenever "Breeze Dark" is selected in "Quick Settings" all sites that provide a dark mode and honor the user's system/device setting should render in dark mode. Or if this selection is perceived as applying strictly to window chrome in Plasma, a new choice should be provided to the user to explicitly offer "light" and "dark" themes for reporting to any browsers -- but given this choice already exists in the settings UI it should be logically extended so it's reported to any browser in use under Plasma. STEPS TO REPRODUCE 1. Under Quick Settings -- System Settings choose "Breeze Dark" and click "Apply" OBSERVED RESULT Visit any site for which your user preferences have been set to follow the system/device settings for light/dark mode and which provides a dark mode, and you will see the site rendered in light mode. EXPECTED RESULT Visit any site for which your user preferences have been set to follow the system/device settings for light/dark mode and which provides a dark mode, and you should see that site rendered in dark mode. SOFTWARE/OS VERSIONS Linux/KDE Plasma: 6.8.0-36-generic KDE Plasma Version: 5.27.11 KDE Frameworks Version: 5.115.0 Qt Version: 5.15.13 ADDITIONAL INFORMATION
This works as expected for me. I just tested it in this very website in Firefox, and it switched to task mode as expected. This means the issue is in those websites or the browser itself, out our signaling to browsers that websites should enter dark mode.