Escaped characters in author output

Actually, this is the offending line.

      $items[$i]['author'] = check_plain($source->title);

Must test.

The culprit is in the teasers.theme file.

    $output .= t('submitted by %author on %time', array('%author' => $element['author'], '%time' => format_date($element['date'], 'medium')));

Since these values have already been sanitized, I believe !author is appropriate.

Fixed in 5.x.1-dev and HEAD. Does not affect Drupal 4-7.