*** 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 "Open new files on tabs" and "Focus on tab if the file is already opened" option doesn't work on Windows. Double clicking on a pdf creates a new window of Okular regardless of which option is chosen in the configuration tab. STEPS TO REPRODUCE 1. Launch Okular. 2. Turn "Open pdf files on a new tab" option on in the config page. 3. Double click on a pdf file. OBSERVED RESULT Opening a pdf files launches a new instance of Ocular. EXPECTED RESULT The said pdf file would show up on a new tab. SOFTWARE/OS VERSIONS Windows: Windows 11 Pro 22631 macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION