Created attachment 171692 [details] Error message when opening large number of files *** 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 After forcing Firefox to use xdg-portals for it's file picker, if you select more than 1071 files using an HTML input[type=files] and hit "Open", you will receive a "file cannot be found" error, with a truncated file name. Using Firefox's built-in GTK file picker I was able to submit more than 4400 files successfully. STEPS TO REPRODUCE 1. Enable xdg-portals in Firefox by setting `widget.use-xdg-desktop-portal.file-picker` to 1 2. Navigate to any site that opens a file picker 3. Select more than 1071 files 4. Try to submit those files by clicking "Open" OBSERVED RESULT Error stating "the file cannot be found" with a broken file path. EXPECTED RESULT All selected files to be added to the HTML form for further processing. SOFTWARE/OS VERSIONS Linux/KDE Plasma: CachyOS (available in About System) KDE Plasma Version: 6.1.2 KDE Frameworks Version: 6.3.0 Qt Version: 6.7.2 ADDITIONAL INFORMATION