Horses occasionally jump very high while pathfinding

The bug

Horses rarely jump while pathfinding, because they can step up a whole block. However, they do jump in some cases. In versions prior to 24w06a, horses would perform a normal jump similar to the jumps of other entities. But as of 24w06a, pathfinding horses perform a very high jump.

How to reproduce

The most reliable way I have found to trigger a horse to jump while pathfinding is to make it intersect with a block. This can be done with trapdoors, for example, but here I’ll include a way that uses commands:

1. Spawn a horse

2. Hold a golden carrot to make it pathfind towards you

3. Run /execute at @e[type=horse] run setblock ~ ~ ~ white_carpet

Expected result

The horse should jump one block like other mobs

Observed result

The horse jumps high in proportion to its jump height stat

Notes

24w06a removed the horse.jump_strength attribute, which only affected player-controlled horse jumps, replacing it with the generic.jump_strength attribute (now just jump_strength) which applies to all kinds of jumps.

This may be intended for that reason, but it’s unclear if this technical change was supposed to affect the rare jumps that horses do naturally make while pathfinding.