The latest update seems to cause issues for me where the acquire bonus is not given for items picked from a planter box. 
For testing, I cranked it up a little, and stats show a +1995% bonus to acquire.
When I pick one of the new berries in the wild, I get 21 berries in both versions.
Using v2.9.10 I am able to get 42 when picking from a planter. 
After upgrading to v2.9.15, i only get 2. 

I have only tested with berries so far. 

Find line:

void OnGrowableGather(GrowableEntity plant, Item item, BasePlayer player)​

and replace it with:

void OnGrowableGathered(GrowableEntity growable, Item item, BasePlayer player)​

Fixed in patch to v2.9.21