https://bugs.kde.org/show_bug.cgi?id=393536
--- Comment #6 from Markus Rathgeb ---
$ WAYLAND_DEBUG=1 GDK_BACKEND=wayland /usr/lib64/libexec/gtk3_preview
[3819609.095] -> wl_display@1.get_registry(new id wl_registry@2)
[3819609.207] -> wl_disp...@1.sync(new id wl_callback@3)
[3819609.390] wl_display@1.delete_id(3)
[3819609.408] wl_registry@2.global(1, "wl_compositor", 3)
[3819609.428] -> wl_regis...@2.bind(1, "wl_compositor", 3, new id [unknown]@4)
[3819609.447] wl_registry@2.global(2, "wl_shell", 1)
[3819609.462] wl_registry@2.global(3, "xdg_shell", 1)
[3819609.471] wl_registry@2.global(4, "zxdg_shell_v6", 1)
[3819609.479] wl_registry@2.global(5, "wl_shm", 1)
[3819609.489] -> wl_regis...@2.bind(5, "wl_shm", 1, new id [unknown]@5)
[3819609.579] -> wl_shm@5.create_pool(new id wl_shm_pool@6, fd 8, 2304)
[3819609.751] -> wl_shm_pool@6.resize(8704)
[3819609.917] -> wl_shm_pool@6.resize(21504)
[3819610.132] -> wl_shm_pool@6.resize(47104)
[3819610.534] -> wl_shm_pool@6.resize(98304)
[3819612.419] -> wl_shm_pool@6.resize(200704)
[3819612.840] -> wl_shm_pool@6.resize(405504)
[3819616.364] -> wl_shm_pool@6.resize(815104)
[3819622.507] -> wl_shm_pool@6.resize(1634304)
[3819634.456] wl_registry@2.global(6, "wl_seat", 5)
[3819634.481] wl_registry@2.global(7, "zwp_pointer_gestures_v1", 1)
[3819634.497] -> wl_regis...@2.bind(7, "zwp_pointer_gestures_v1", 1, new id
[unknown]@7)
[3819634.516] wl_registry@2.global(8, "zwp_pointer_constraints_v1", 1)
[3819634.530] wl_registry@2.global(9, "wl_data_device_manager", 3)
[3819634.544] -> wl_regis...@2.bind(9, "wl_data_device_manager", 3, new id
[unknown]@8)
[3819634.562] -> wl_regis...@2.bind(6, "wl_seat", 5, new id [unknown]@9)
[3819637.272] -> wl_compositor@4.create_surface(new id wl_surface@10)
[3819637.308] -> wl_data_device_manager@8.get_data_device(new id
wl_data_device@11, wl_seat@9)
[3819637.345] -> wl_compositor@4.create_surface(new id wl_surface@12)
[3819637.463] -> wl_disp...@1.sync(new id wl_callback@13)
[3819637.474] wl_registry@2.global(10, "org_kde_kwin_idle", 1)
[3819637.493] wl_registry@2.global(11, "zwp_idle_inhibit_manager_v1", 1)
[3819637.510] wl_registry@2.global(12, "org_kde_plasma_shell", 4)
[3819637.527] wl_registry@2.global(13, "qt_surface_extension", 1)
[3819637.544] wl_registry@2.global(14, "org_kde_kwin_appmenu_manager", 1)
[3819637.562] wl_registry@2.global(15,
"org_kde_kwin_server_decoration_palette_manager", 1)
[3819637.578] wl_registry@2.global(16, "org_kde_plasma_window_management", 7)
[3819637.596] wl_registry@2.global(17, "org_kde_kwin_shadow_manager", 2)
[3819637.612] wl_registry@2.global(18, "org_kde_kwin_dpms_manager", 1)
[3819637.628] wl_registry@2.global(19,
"org_kde_kwin_server_decoration_manager", 1)
[3819637.646] -> wl_regis...@2.bind(19,
"org_kde_kwin_server_decoration_manager", 1, new id [unknown]@14)
[3819637.669] wl_registry@2.global(20, "org_kde_kwin_outputmanagement", 1)
[3819637.687] wl_registry@2.global(21, "wl_subcompositor", 1)
[3819637.704] -> wl_regis...@2.bind(21, "wl_subcompositor", 1, new id
[unknown]@15)
[3819637.726] wl_registry@2.global(22, "zxdg_exporter_v2", 1)
[3819637.743] wl_registry@2.global(23, "zxdg_importer_v2", 1)
[3819637.761] wl_registry@2.global(24, "zwp_relative_pointer_manager_v1", 1)
[3819637.775] wl_registry@2.global(25, "org_kde_kwin_outputdevice", 1)
[3819637.792] wl_registry@2.global(26, "wl_output", 3)
[3819637.807] -> wl_regis...@2.bind(26, "wl_output", 2, new id [unknown]@16)
[3819637.871] -> wl_disp...@1.sync(new id wl_callback@17)
[3819637.884] wl_registry@2.global(27, "org_kde_kwin_outputdevice", 1)
[3819637.901] wl_registry@2.global(28, "wl_output", 3)
[3819637.919] -> wl_regis...@2.bind(28, "wl_output", 2, new id [unknown]@18)
[3819637.943] -> wl_disp...@1.sync(new id wl_callback@19)
[3819637.955] wl_registry@2.global(29, "wl_drm", 2)
[3819637.972] wl_registry@2.global(30, "org_kde_kwin_fake_input", 2)
[3819637.989] wl_registry@2.global(31, "wl_text_input_manager", 1)
[3819638.007] wl_registry@2.global(32, "zwp_text_input_manager_v2", 1)
[3819638.024] wl_registry@2.global(33, "org_kde_kwin_blur_manager", 1)
[3819638.040] wl_registry@2.global(34, "org_kde_kwin_contrast_manager", 1)
[3819638.056] wl_registry@2.global(35, "org_kde_kwin_slide_manager", 1)
[3819638.069] wl_callb...@3.done(6712)
[3819638.327] wl_display@1.delete_id(13)
[3819638.335] wl_shm@5.format(0)
[3819638.338] wl_shm@5.format(1)
[3819638.342] wl_seat@9.capabilities(3)
[3819638.346] -> wl_seat@9.get_pointer(new id wl_pointer@3)
[3819638.366] -> zwp_pointer_gestures_v1@7.get_swipe_gesture(new id
zwp_pointer_gesture_swipe_v1@20, wl_pointer@3)
[3819638.374] -> zwp_pointer_gestures_v1@7.get_pinch_gesture(new id
zwp_pointer_gesture_pinch_v1@21, wl_pointer@3)
[3819638.381] -> wl_seat@9.get_keyboard(new id wl_keyboard@22)
[3819638.395] wl_s...@9.name("")
[3819638.404] wl_callb...@13.done(6712)
[3819638.412] org_kde_kwin_server_decoration_manager@14.default_mode(2)
[3819638.446]