According to this post
http://ezserver.online/forums/index.php?topic=1341.0 something has changed very recently. Of course, it wasn't Hunter that advised me so the person could have been wrong.
I've been using it for over a week and this is the first problem I've noticed other than the other issues (like druid 3.0 regen) people have posted about with the source code update (that supposedly supports Underfoot).