I uploaded a patch set for the Disambiguator extension, and there was an unrelated test failure, apparently caused by the Metrolook skin. This should be fixed.
06:46:12 1) ResourcesTest::testStyleMedia with data set #21 ('skins.metrolook.styles.responsive', 'screen', 'screen.mobile.less', stdClass) 06:46:12 Stylesheets should not both specify "media" and contain @media 06:46:12 Failed asserting that false is true. 06:46:12 06:46:12 /mnt/jenkins-workspace/workspace/mwext-testextension-zend/src/tests/phpunit/structure/ResourcesTest.php:36 06:46:12 /mnt/jenkins-workspace/workspace/mwext-testextension-zend/src/tests/phpunit/MediaWikiTestCase.php:137