(In reply to Ludwig Nussel from comment #26) > I just had a similar situation within 42.2. Suddenly dolphin, digikam etc > had no icons anymore when run in WindowMaker. The missing icons should be more or less "fixed" with Qt 5.12 (released a couple of days ago), as current kiconthemes versions set "breeze" as fallback theme then (this is only possible since Qt 5.12): https://cgit.kde.org/kiconthemes.git/commit/?id=421404563e87a50d0af22eb8ca09866fd89a36cc At least this should affect applications linking against kiconthemes (which includes all applications that use kxmlgui, i.e. most "real" KDE applications). I just ran a couple of KDE applications (kdevelop5, dolphin, systemsettings5) in IceWM, and icons that were missing before are shown now (taken from the "breeze" icon theme). We probably should add a "Recommends: breeze-icons" to libKF5IconThemes5 though, as suggested here: https://mail.kde.org/pipermail/kde-frameworks-devel/2018-August/069732.html