Switching from compact mode to normal mode makes appmenu disappear

Clicking on "View" -> "Compact mode" in Banshee and switching back makes the global app menu disappear. Banshee has to be minimzied and restored first to make the appmenu visible. See attached video.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: appmenu-gtk 0.3.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 1.23-0ubuntu3
Architecture: amd64
Date: Thu Oct 27 10:58:45 2011
EcryptfsInUse: Yes
ProcEnviron:
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: appmenu-gtk
UpgradeStatus: No upgrade log present (probably fresh install)