Dash closes whenever "q" is pressed, when keyboard shortcut for closing window is changed to Super+Q

[Jan Horcicka]

To reproduce:
Go to: "System Settings" -> "Keyboard" -> "Shortcuts"
Select: "Windows" -> "Close Window"
Enter new shortcut: "Super+Q"
Close system settings.

Open Dash:
Start typing any word that contains letter "q" e.g.: "qtcreator"
As soon as q is pressed, Dash closes.

It doesn't matter what position the "q" character is, Dash closes anyway.
Try typing: "aqua"

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: unity 7.1.2+14.04.20140321-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-19.40-generic 3.13.6
Uname: Linux 3.13.0-19-generic x86_64
NonfreeKernelModules: nvidia wl
ApportVersion: 2.13.3-0ubuntu1
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CurrentDesktop: Unity
Date: Fri Mar 28 15:16:29 2014
InstallationDate: Installed on 2014-03-28 (0 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Beta amd64+mac (20140326)
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)

[Seth Johnson (sethj)]

Reproduced on Ubuntu 15.10. As soon as I press "q" the dash closes.