Created attachment 102544 [details] Wayland icon in the window decoration As the screenshot shows KWin cannot derive the desktop file name for the window. The configure window has the correct icon.
@David: why did you move that one to KWin? If it were a KWin bug I would have reported against KWin.
Git commit 57f40f44c74e2bcfa99f4d0cd6bf4ff731447e2f by Daniel Nicoletti. Committed on 27/01/2018 at 03:35. Pushed by dantti into branch 'master'. Fix desktop file name for kde-add-printer so we get an icon on Wayland M +1 -1 add-printer/CMakeLists.txt R +0 -0 add-printer/org.kde.kde-add-printer.desktop [from: add-printer/org.kde.AddPrinter.desktop - 100% similarity] https://commits.kde.org/print-manager/57f40f44c74e2bcfa99f4d0cd6bf4ff731447e2f