Robots.txt creates invalid entries due to wrong formatting

When using multiple Disallow values in he document, this is output without new lines before the "Disallow":

User-agent: *
Disallow: /searchDisallow: /librarysearchDisallow: /search2Disallow: /librarysearch2

This is due to the formatting of the hst:script at /hst:hst/hst:configurations/hst:default/hst:templates/robotstxt.ftl