Thread:Extension talk:MediaWikiChat/User lists shows no users/reply (2)

OK so this seems to do the trick. In GetNewWorker.php:142 change:

$result->addValue( array( $mName, 'users', $idString ), 'online', true );

to:

$result->addValue( array( $mName, 'users', $idString ), 'online', 'true' );

You might want to do a more detailed research, but at least this is a good clue, I think.