composer-installer: Plugin not working correctly when sniffs install depth is equal to "1"

Problem/Motivation

Since I use the “*” constraint in our projects, the package updated to 0.3.0 today. Right now, the default PHPCompatiblity sniff can not be found. I have not yet looked into it myself in the hope that you might know right away what the issue is.

Expected behaviour

PHPComptability sniff should still be installed

$ ./vendor/bin/phpcs -i
The installed coding standards are Zend, PHPCS, MySource, PSR2, PEAR, PSR1, Squiz and PHPCompatibility

Actual behaviour

Sniff is not installed:

$ vendor/bin/phpcs -i
The installed coding standards are Zend, PHPCS, MySource, PSR2, PEAR, PSR1 and Squiz

Steps to reproduce

composer.json:

  "require-dev": {
    "squizlabs/php_codesniffer": "^2",
    "dealerdirect/phpcodesniffer-composer-installer": "*",
    "frenck/php-compatibility": "*"
  }

Delete vendor folder (if 0.2.1 which still works was installed, the sniff is still there)

$ composer update
$ vendor/bin/phpcs 
$ ./vendor/bin/phpcs --standard=PHPCompatibility --extensions=php ./src
$ ./vendor/bin/phpcs -i

Proposed changes

Is there a migration I missed or needs frenck/PHPCompatibility a new version too?

Thanks in advance for any help.