STEPS TO REPRODUCE 1. Open Title editor 2. Bring up Add image dialog (Alt-I) 3. Navigate to a directory with images named as follows: - FOO.JPG - BAR.JPG OBSERVED RESULT Files are not shown hence they cannot be imported. EXPECTED RESULT Files with uppercase extensions are shown as well. SOFTWARE/OS VERSIONS Arch Linux, x86_64 (current) KDE Frameworks Version: Version 5.101.0 Qt Version: Version 5.15.7 (built against 5.15.7) ADDITIONAL INFORMATION While this can be easily fixed by renaming the files it can still be a bit confusing as for instance Clip importer lists all the supported files regardless the case.
Confirmed on latest master on Ubuntu 22.04 (using XFCE).