both local and global menus appear after maximise/unmaximise

[Michael Blennerhassett]

1. Turn local menus off (application menu 'in top bar')
2. Open a window (non-maximised)
3. Maximise the window
4. Un-maximise the window
5. Now the window has local menus ('in window title bar') too

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: unity 7.1.2+14.04.20140228-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-13.33-generic 3.13.5
Uname: Linux 3.13.0-13-generic x86_64
ApportVersion: 2.13.2-0ubuntu5
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CurrentDesktop: Unity
Date: Sat Mar 1 16:10:17 2014
InstallationDate: Installed on 2013-06-22 (252 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130621)
SourcePackage: unity
UpgradeStatus: Upgraded to trusty on 2013-12-05 (85 days ago)