This bug is only a minor visual oversight, but when only your upper body gets stuck on honey blocks, the particle shows around your feet only. Shouldn't the particles appear wherever your hitbox comes into contact?

(Please apply this with mobs as well.)

Edit: Because of how elytra hitboxes work, I find it worth mentioning that maybe the player's texture, whenever it comes into contact with honey, creates particles. Just, please apply it with elytra's too.