Just want to preface this issue by saying hubby and I love this mod, its brilliant and we can't wait for later releases!

Bug Description:

Horse riders Skeleton and Zombie not spawning on horses

Steps to reproduce
Utilised these two mods to spawn Zombie and Skeleton riders at 100%/ 1 in config
Flew around world until started spawning, all Zombies and Skeletons stood next to spawned horses rather than mounted

Mods used:

• https://modrinth.com/mod/zombie-horse-spawn
• https://modrinth.com/mod/skeleton-horse-spawn

Mod Version:
1.20.1-1.4 Forge
Minecraft Version:
1.20.1

Have you tried removing other mods? Did the issue persist after removing them?:
Haven't tried removing mods as looking for them to work with Livestock Overhaul, but also impossible to test without mod installed due to low spawn rate chance in game

Are you on Singleplayer or a Server?:
SP