Comment 1 for bug 906049

This 'issue' stems from the icon in the gutter default size and padding. Both the messaging and sound menu use the same dimensions to determine the size of that icon.

  gint padding = 0;
  gtk_widget_style_get(GTK_WIDGET(self), "horizontal-padding", &padding, NULL);
  gint width, height;
  gtk_icon_size_lookup (GTK_ICON_SIZE_MENU, &width, &height);