macos: invalidate surface contents when mapping

diff --git a/gdk/macos/gdkmacossurface.c b/gdk/macos/gdkmacossurface.c
index bca3c9210a0e1f49ce7e1f85b702acbc7fc3ff6a..4357fbf1a9a1be573b3d4637d192f5342b083aff 100644 (file)
--- a/gdk/macos/gdkmacossurface.c
+++ b/gdk/macos/gdkmacossurface.c
@@ -884,6 +884,7 @@ _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));
     }
 }