Created attachment 126302 [details] Dolphin without many icons STEPS TO REPRODUCE 1. open system settings > icons 2. click on "Get new icons..." button and install an icon theme 3. close "Get new icons..." window 4. apply the just installed icon theme 5. click on "Get new icons..." button again and uninstall the previously installed and applied icon theme OBSERVED RESULT the icon theme is uninstalled but another one is not set, causing many missing icons on the system. Attached screenshot shows Dolphin without many icons. EXPECTED RESULT when we use the kcm to uninstall a third-party icon theme currently used, the next icon theme in the list is automatically applied. GHNS window should also apply another icon theme after uninstalling the current one. SOFTWARE/OS VERSIONS Operating System: Arch Linux KDE Plasma Version: 5.18.1 KDE Frameworks Version: 5.67.0 Qt Version: 5.14.1
Can confirm this one on current master. Perhaps it would be a good idea to default to Breeze or Breeze Dark (as those are typically installed system-wide on a Plasma 5 installation) whenever the current theme is removed. In case the user decides to remove all installed third-party themes, they wouldn't fallback to e.g. an incomplete system-wide theme like Adwaita.
Defaulting to Breeze is a good idea.
Currently, after uninstalling the icon theme most icons of Dolphin are reverted to Breeze - despite no icon theme is selected in Icons KCM - but the icons in its window decoration and in task manager are not. Operating System: KDE neon Unstable Edition KDE Plasma Version: 5.25.80 KDE Frameworks Version: 5.95.0 Qt Version: 5.15.4 Graphics Platform: Wayland