MKVmerge-gui no longer allows using keyboard to select the language

[Volodya]

The way i am used to doing stuff:

Select the stream
Type the title of the stream
Press tab
Enter the first letters of the language ('ru' for russian for example)

What used to happen:

The correct language was selected

What happens now:

Nothing happens when i type. I am forced to use up-down buttons to select the language.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: mkvtoolnix-gui 6.7.0-1
ProcVersionSignature: Ubuntu 3.13.0-37.64-generic 3.13.11.7
Uname: Linux 3.13.0-37-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Oct 16 09:35:59 2014
InstallationDate: Installed on 2014-10-02 (13 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
SourcePackage: mkvtoolnix
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.