I’ve been using Thrall Pots and the Feeding Box (for Pets) since I started playing in October. They have worked consistently well for me, in non-modded servers.
I’ve noticed in one Online Private server with various ratios adjusted that food would be taken from the pot and horded by followers. That was nice, in a way, because they didn’t consume that food when I was offline, so I could collect it from them and place it back in the distribution areas.
Back to the subject of normal handling, sometimes I observed single pieces of food being teleported into follower inventories (if there was space available). They also have been receiving the “buff” since before this latest update, which I believe I read was adjusted slightly in the latest release notes.
Before the mounts update, I think the followers would take foods not in their diet at an increased rate. Now, their preferred diet appears to be more closely followed. (Ostrich do not eat plant fiber, but Gazelle do) Humans don’t like cooked human flesh any longer.
Is there a third feeding system? I believe my horses draw from the Pet food box, can’t recall its name at the moment.
Did you give the followers at least 20 minutes to check out your offered bounty? I’m not sure of their consumption rate, but 20 minutes was what the Animal Pen would use to generate dung.
I’ve also observed success placing a food item directly into a follower’s inventory, say on the road, though they also appear to draw from the thrall pot occasionally when we’re away from home base. I feel much more confident about placing bulk quantities of food items into a follower inventory, without instantaneous consumption.
Finally, my choice to use the Pots even though they were not necessary to keep followers alive had a lot to do with not wanting to waste things collected. I guess, only recently have I slain some creatures solely for XP and not to collect various resources. Am at capacity on most containers. Pots are a good way to drop things off. Can keep a stash of food items nearby for use if you have some important action you want to support with nutrition, like a Purge or Raid. That is, if your pots are actually functioning, which it sounded like you were not observing.