Modpack version
0.4.3
Describe the bug
All slimes, including magma cubes and end slimes (and possibly any other slimes I might have missed) have a hitbox the size of a big slime, regardless of their actual size.

Screenshots

Hmm, do you happen to be using the EntityCulling mod?

Nope, I'm not using any extra mods

Huh, that's a strange one :P

After looking at it for a while, I noticed that when you spawn a slime, the hitbox starts normal but grows as soon as it starts jumping. This reminded me very much of this issue I reported to Shrink a few days ago, and it just so happens that this issue also occurs with just Shrink and Forge installed.

Ah cool :D