Using translations of predefined Behat steps (Phar setting)

I ran some tests with predefined definitions of the Mink extension step. They work as long as they are in English.

Now I have tried the following scenario with German steps:

# language: de
Funktionalität: Demo

  @javascript
  Szenario: Test 1
    Angenommen I am on "/"
    Angenommen ich bin auf "/"
    ...

      

        
        
        
      

    

Behat now tells me that the definition of the German pitch is undefined while the English version works.

According to CLI prompt, behat --lang de -dl

should display translated definitions, but it only shows me English ...

What am I doing wrong here?

Edit: Here's a script to rebuild the script. It follows the installation steps from the docs ( http://extensions.behat.org/mink/#through-phar ) in a temp directory and runs a test file of functions.

#!/bin/bash

set -e

TEMPDIR=/tmp/behat-$$
mkdir $TEMPDIR
cd $TEMPDIR

curl http://behat.org/downloads/behat.phar >behat.phar
curl http://behat.org/downloads/mink.phar >mink.phar
curl http://behat.org/downloads/mink_extension.phar >mink_extension.phar

cat >behat.yml <<EOF
default:
  extensions:
    mink_extension.phar:
      mink_loader: 'mink.phar'
      base_url:    'http://behat.org'
      goutte:      ~
EOF

mkdir features
cat >features/test.feature <<EOF
# language: de
Funktionalität: Demo

  Szenario: Öffne Startseite DE + EN
    Angenommen I am on "/"
    Angenommen ich bin auf "/"
EOF

php behat.phar