HUD: Pressing <Enter> on a menu item executes the action multiple times.

[Lorenzo Villani]

Steps to reproduce:

1) Start any application, e.g.: Google Chrome;
2) Invoke the HUD by pressing meta (Alt);
3) Type the name of a menu entry, e.g.: "New Tab"
4) Press "Enter";
5) The action associated with the menu item will be invoked from two to three times.

Other applications (such as Nautilus, Thunderbird, Firefox) expose a similar behavior. I presume it is systemic.

Clicking on the menu item does NOT result in erroneous behavior.

Expected result:

Pressing the <Enter> key should invoke the action associated with the menu item only once.

Attachments: a screen recording session showing the problem.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity 5.6.0-0ubuntu4
ProcVersionSignature: Ubuntu 3.2.0-18.29-generic 3.2.9
Uname: Linux 3.2.0-18-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 1.94.1-0ubuntu2
Architecture: amd64
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
Date: Sat Mar 17 12:57:54 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120209)
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/zsh
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)

[Lorenzo Villani (lvillani)]

Looks like it is fixed in unity 5.8.0-0ubuntu1