a part of the bottom panel missing after a context menu is launched

[Alexey Baskinov]

I am using Ubuntu 11.04. The version of gnome-panel is 1:2.32.1-0ubuntu6.5. I expected the bottom panel of the desktop (see the attached image) and the workspace switcher to remain intact during and after I launch the context menu of an application. Instead, after I right-clicked and before the menu appeared a part of the bottom panel right under the context menu vanished making the underlying fragment of the desktop background image visible. The part of the panel was missing after closing the context menu until I restored its background by right-clicking on the bottom panel, launching its context menus.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: gnome-panel 1:2.32.1-0ubuntu6.5
ProcVersionSignature: Ubuntu 2.6.38-10.46-generic 2.6.38.7
Uname: Linux 2.6.38-10-generic x86_64
Architecture: amd64
Date: Thu Aug 4 18:48:33 2011
ExecutablePath: /usr/bin/gnome-panel
GConfNonDefault:
 /apps/panel/general/applet_id_list=[applet_2,applet_7,applet_6,applet_4,applet_3,applet_1,applet_0,notification_area_screen0,show_desktop_button_screen0,window_list_screen0,workspace_switcher_screen0,trashapplet_screen0]
 /apps/panel/general/object_id_list=[object_13,object_12,object_11,object_10,object_9,object_8,object_7,object_6,object_5,object_4,object_3,object_2,object_1,object_0,menu_bar_screen0,browser_launcher_screen0]
 /apps/panel/general/toplevel_id_list=[bottom_panel_screen0,top_panel_screen0]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
ProcEnviron:
 LANGUAGE=ru:en
 LANG=ru_RU.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-panel
UpgradeStatus: No upgrade log present (probably fresh install)