Preventive Medicine proc recipe not available below lvl 30 at the amerit vendor

[Carroto]

At the rogue merit vendor in Cap if I set the slider below 30 I see the recipes for the other five pieces, but not the proc.  Bringing the slider to 30 the proc recipe shows up.

At the reward merit vendor below level 30 all six recipes show up, so this seems to only be an issue with the alignment merit vendor and not the reward merit one.