https://bugs.kde.org/show_bug.cgi?id=425537
--- Comment #4 from gudvinr+...@gmail.com --- What I found so far: In desktop file I put "StartupWMClass=firefox-whatever". In command exec string I add "--class firefox-whatever". In kwin debug consile for firefox window I see "resourceClass firefox". -- You are receiving this mail because: You are watching all bug changes.