gistfile1.diff

diff --git a/core/plugin/gtk/gtk.rb b/core/plugin/gtk/gtk.rb
index 9c1d4e1..34d57ac 100644
--- a/core/plugin/gtk/gtk.rb
+++ b/core/plugin/gtk/gtk.rb
@@ -311,7 +311,10 @@ Plugin.create :gtk do
   on_gui_contextmenu do |event, contextmenu|
     widget = widgetof(event.widget)
     if widget
-      ::Gtk::ContextMenu.new(*contextmenu).popup(widget, event) end end
+      menu = ::Gtk::ContextMenu.new(*contextmenu).popup(widget, event)
+      menu.signal_connect(:hide) { |this|
+        this.destroy }
+    end end
 
   on_gui_timeline_clear do |i_timeline|
     timeline = widgetof(i_timeline)