diff --git a/gtk/gtkpopover.c b/gtk/gtkpopover.c
index 3c16e89312..2f4a33493e 100644
--- a/gtk/gtkpopover.c
+++ b/gtk/gtkpopover.c
@@ -957,6 +957,8 @@ gtk_popover_realize (GtkWidget *widget)
   priv->renderer = gsk_renderer_new_for_surface (priv->surface);
 
   gtk_native_realize (GTK_NATIVE (popover));
+
+  gtk_native_update_opaque_region (GTK_NATIVE (popover), priv->contents_widget, TRUE, TRUE, 0);
 }
 
 static void
@@ -1392,6 +1394,9 @@ gtk_popover_update_shape (GtkPopover *popover)
       gdk_surface_set_input_region (priv->surface, region);
       cairo_region_destroy (region);
     }
+
+  if (_gtk_widget_get_realized (GTK_WIDGET (popover)))
+    gtk_native_update_opaque_region (GTK_NATIVE (popover), priv->contents_widget, TRUE, TRUE, 0);
 }
 
 static int