MC-91893 was said to be fixed for this snapshot, but this sound is still missing a subtitle.
Linked issues
relates to 17
MC-177094
Wolf howling sound event has no subtitle
Resolved
MC-91893
Missing subtitles for various sounds
Resolved
MC-98316
Wrong subtitles caused by missing distinction
Open
MC-166292
Subtitle from foxes eating chorus fruit: "Player teleports"
Resolved
MC-167375
Baby turtle subtitles are grammatically incorrect
Resolved
12 more links
There is no sound called minecraft:entity.skeleton_horse.step in Minecraft.
You might be thinking of minecraft:entity.skeleton_horse.step_water