Shape of glow effect is based on mob's base layer

The slime needs to be changed.

The glowing effect relies on the entity's base. Therefor, this may not be a glitch.

The glowing effect requires Everything the entity is holding, including slime mass, which the huge slime seems to have to glow at the inner part which isn't suppose to happen.

The mooshroom's mushroom needs to glow!
The sheep's wool needs to glow until sheared!
Zombies' Items need to glow
Skeleton's Bow and Sword needs to glow

Even though this is probably not a glitch I thought i should report it 🙂.

Confirmed for 15w39c

For now it's "working as (not) intended".

We have some technical restrictions that prevent us from changing it right now. I'll re-visit this after 1.9 is released, but in 1.9 we will have the outline from the base model without equipment.