Minecraft 1.13.2, Minecraft 19w04b, Minecraft 19w05a, Minecraft 19w06a, Minecraft 19w07a, Minecraft 19w08b
Whenever riding a horse, all sounds play except for the horse's jumping sound; all volume settings are on.
This has been happening since 1.9. In 1.8, the sound played.
When playing on older versions, the sound plays fine.
MC-182076 Horse jumping sound is unused