I'm not sure if this is a bug or a (nasty) feature, and if this maybe better fits some FAQ or guide.
I've put some WWWs on a herbalist's table to dry, returned some 20h real time later and found a germinated wheat seed among other seeds. I assume that the WWW dried into a wheat seed, which then germinated. as I don't have the beermaking skill, I should not be able to place wheat seeds on the table to germinate.
if this is a bug, please fix - loosing wheat isn't exactly helpful for new players.
if that's a feature, please delete the thread (and maybe PM me to add this to the wiki, and maybe add a note to some FAQs and guides)