How does harvesting work now?

[Bwixie]

I want to harvest witchwood bark but harvesting doesn't seem to do anything :/

[Clarissa]

Harvesting is an automatic behavior that you can toggle off or on, you will automatically collect harvest-ready materials as you walk over them if you have toggled it on in your (a)bilities list, and autoexploring will route over harvestable materials. It works basically the same as rifling through trash with the scavenger ability.

As for witchwood in particular, I don't wind up with it too often, even though it seems tree bark should be pretty easily-obtainable when the trees are around, I think the witchwood trees must just not produce any collectible bark most of the time.

[Qua3st0r]

Only certain plants of each type are "ripe" and thus harvestable. You can see these with the overlay view (hold down alt). Once you see those, just walk over them (while not in view of any hostiles) in order to harvest.