command-not found crashes on umlaut

When I access my ubuntu 12.04 server via ssh and mistype a command so that the word contains a umlaut (), command-not-found crashes. I successfully reproduced this behavior.

Probably command-not-found will crash when a umlaut occours in a normal shell rather than the ssh shell. However I didn't check this.

I am using Ubuntu 14.04.2 and command-not-found 0.2.46ubuntu6 .

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: command-not-found 0.2.46ubuntu6
ProcVersionSignature: Ubuntu 3.5.0-32.53~precise1-generic 3.5.7.11
Uname: Linux 3.5.0-32-generic i686
ApportVersion: 2.0.1-0ubuntu17.2
Architecture: i386
Date: Wed Jun 5 15:10:10 2013
InstallationMedia: Ubuntu-Server 12.04.2 LTS "Precise Pangolin" - Release i386 (20130214)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 TERM=cygwin
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: command-not-found
UpgradeStatus: No upgrade log present (probably fresh install)