*** 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 STEPS TO REPRODUCE 1. The DARK Mode can't Not change 2. 3. OBSERVED RESULT EXPECTED RESULT SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: Linux Mint Debian Edition 6/Cinnamon (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION
Thanks for the report, but it is very unclear. If, on an updated Okular, this is still occurring please reopen this request and provide detailed steps on what actions you are taking and what you believe the results should be. If it works on a newer version please flag as resolved.