https://bugs.kde.org/show_bug.cgi?id=439477
--- Comment #14 from shenlebantongying <shenlebantongy...@gmail.com> --- I can confirm that this bug can be reproduced by removing "%u" in the exec line from the `firefox.desktop` file. I was changing that line to enforce some settings, and I thought %u is useless "bureaucracy". Appending %u back to that line solved the problem for me. I am on using KDE from archlinux's unstable repo. Operating System: Arch Linux KDE Plasma Version: 5.23.90 KDE Frameworks Version: 5.90.0 Qt Version: 5.15.2 -- You are receiving this mail because: You are watching all bug changes.