Yeah, they do that. :\Single player I'd tested before and never noticed but when I left it afk for a few minutes weeds over took everything.
Hmm that's odd. Might be worth asking @InfinityRaider in that case; the only other thing that's happened to me before is that I've changed what I think is the AgriCraft config - and it is - but its one for a different pack! That seems unlikely though.