It's not all of them, but a few things like cucumbers, lettuce, etc. But other veggies like onions, bell peppers, and soforth are not affected.
This is on the latest update for the 1.12.2 version.

I think this is related to #372

We have encountered this in the Enigmatica 2: Expert modpack as well.

Will this issue be fixed or Pam already moved to 1.14-1.15 Forge and try to port her mods to newer version, just curious here since no activity or none assigned since october on this issue.