macos: invalidate surface contents when mapping

diff --git a/gdk/macos/gdkmacossurface.c b/gdk/macos/gdkmacossurface.c
index 948f08c1878fe57a95bca6ea66e056f357cc85ca..add5f15db7673f7f5cf5459df4b7a6cc4eef783c 100644 (file)
--- a/gdk/macos/gdkmacossurface.c
+++ b/gdk/macos/gdkmacossurface.c
@@ -910,6 +910,7 @@ _gdk_macos_surface_show (GdkMacosSurface *self)
     {
       gdk_surface_set_is_mapped (GDK_SURFACE (self), TRUE);
       gdk_surface_request_layout (GDK_SURFACE (self));
+      gdk_surface_invalidate_rect (GDK_SURFACE (self), NULL);
       gdk_surface_thaw_updates (GDK_SURFACE (self));
     }
 }