STEPS TO REPRODUCE 1. Enable file opening in tabs on okular. 2. Open multiple files. OBSERVED RESULT Files will be opened on separate windows and not tabs. if one would to open multiple files via (crtl + o) it would work. This has been observed on Snap and Flatpak versions (the deb version is outdated). EXPECTED RESULT SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION
There is already bug opened about this issue.
*** This bug has been marked as a duplicate of bug 434777 ***