[BUG] Plant Traits don't work

[Ravellon]

Reproduction:

Basically all plant traits don't work. The only exception seems to be Liquids Contents. Every other trait, such as Stinging Stem (hurts you if you try to pick it up without gardening gloves), Sharpened Leaves (gives plant attack damage), Hypodermic Prickles (injects plant's reagents on hit), Prickly Adhesion (embeds the plant), Bright Petals (ignites on hit), Gaseous Decomposition (should turn reagents in a plant with Liquid Contents into smoke), etc, do not seem to work.
Deathnettle still deals 30 damage on hit but that's because that is default damage of the plant item, not because of the trait. Even at 100 potency it deals 30 when it should actually deal 45.

Liquid Contents is the only trait that works, making the plant squash on throw and deposit the reagents on the hit object/mob/tile.