Chain up in the draw() implementation of GtkAssistant to let
GtkWindow draw the resize grip. This avoids black resize grips
in GtkAssistant windows.
GtkAssistantPrivate *priv = assistant->priv;
GtkContainer *container = GTK_CONTAINER (widget);
+ if (GTK_WIDGET_CLASS (gtk_assistant_parent_class)->draw)
+ GTK_WIDGET_CLASS (gtk_assistant_parent_class)->draw (widget, cr);
+
assistant_paint_colored_box (widget, cr);
gtk_container_propagate_draw (container, priv->header_image, cr);