The source project of this merge request has been removed.
xwayland/xwm: instance is 0x0 in some X11 app
qtcreator is started in xcb platform, there is no unique information in WM_NAME. Unique information such as app_id is placed in _GTK_APPLICATION_ID. wlr_xwayland_surface.instance should be obtained from _GTK_APPLICATION_ID first.
issues: #3887