Horses and llamas are usually jumping as we can see in the videos. The most annoying thing in this bug is the noise that horses are doing while they jump for several minutes.
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I'm having the same issue. I've surrounded my house by bamboo only one layer deep. All of the animals and the Endermen are "stuck" and jumping. They look like carousel animals. It's very frustrating.

Looks like ai behaviour issues when stuck it does work with cocoa, ladder, slabs and etc.

It looks like their pathfinding seems to not know that the block in front of them is not possible to jump over.

I have the same issue. They mainly jump up against wallblocks, but when they move over to full blocks, they keep jumping. It looks weird when you have a pen of jumping animals.