[MC-132019] Horse with passenger has trouble traveling up and down blocks

The bug

Hostile mob without bow, such as zombies, creepers, when they ride a horse, sometimes they can't pathfind well.

How to reproduce

Run

/summon horse ~ ~ ~ {Passengers:[{id:"husk"}],Tame:true}

Run
```
/summon villager
```
→ Notice the horseman and horse can't surmount some very easy obstacles, even the their hitbox is permissible

Attachments

2023-09-10_17-48-02.mp4

2023-09-10_17-50-49.mp4

2023-09-10_17-51-38.mp4

Comments 5

Pau Olivares 2018-06-25T10:43:24Z

Confirmed for MC 1.13-pre3.This bug also appears in MC 1.13-pre2, but not always. They usually get stuck with grass and the border of the blocks.

Asteraoth 2018-08-18T14:15:09Z

Confirmed for 1.13.1-pre1

Asteraoth 2018-08-22T16:29:38Z

Confirmed for 1.13.1

TheTamedWolf 2018-10-09T10:13:13Z

Do you think its this MC-112230

[Mod] Jingy 2023-09-10T22:56:11Z

Without any specific scenarios/situations or provided examples to replicate, I have put together a few of my own tests and was not able to reproduce the described behavior. "Sometimes can't pathfind well" is a bit vague, are you able to provide more specific examples of this happening?

My tests:

One block high staircase to a villager:

[media]

One block downward staircase to a villager:

[media]

One, then two, then three block drop down to a villager:

[media]