Is there a swear / slur filter on the front page ranking?

I noticed a post with the F word, and even though a normally sufficient number of sats were "tipped" to it recently after being posted , it does not show in the front page, even for page 2 or 3.

I didn't see such filtering when searching the source repo on github, so I'm assuming then that this didn't make it into the front page due to the WoT instead.