SUMMARY I can no longer open any font files, neither .otf nor .ttf STEPS TO REPRODUCE 1. Try to open any font either by double-clicking on it, passing it as an argument to the command or via File > Open in Font Viewer. OBSERVED RESULT The error message "Could not read font." EXPECTED RESULT It opens the font file. SOFTWARE/OS VERSIONS Operating System: openSUSE Tumbleweed 20240213 KDE Plasma Version: 5.27.10 KDE Frameworks Version: 5.115.0 Qt Version: 5.15.12 Kernel Version: 6.7.4-8-default (64-bit) ADDITIONAL INFORMATION It used to work fine in the past, but I don't know when it broke. Also, when I start it via Konsole, it behaves as if I had run 'kfontview &' and detaches. I tried Inter, Fira Code, Garamond EB and Gitlab Mono.
*** This bug has been marked as a duplicate of bug 439470 ***