I am currently unable to, but an easy way to see this behavior is either by giving the Giant mob AI and spawning a lot of them either in single or multiplayer, or increasing the size of a lot of mobs with commands. This mob size issue is also apparent with any huge mobs added by mods; if a mod that adds mobs adds a giant mob, only a few can be loaded at a time for the same issues stated in this post.
Picture example of one of the disparities
https://imgur.com/a/N0c5lPg
Picture example of one of the disparities
https://imgur.com/a/N0c5lPg
If its intentional, then they should give horse traps armor or make saddles prevent burning
It doesn't matter if it does, it's out of line with what they're going with and is therefore an error