Blazes and breezes use "large" spawn eggs despite mobs of a similar size using "medium"

The Bug:

The new Spawn Egg textures introduce a system of the eggs having various sizes that correspond with the size of the respective mob, with there being three; small, medium, and large.
A few mobs that include the medium size range are humanoids like skeletons, zombies, or strays. There’s also Creepers in this category.
However, despite being around the same size if not the exact size as the previously mentioned mobs, Blazes and Breezes have large spawn eggs for some reason. This seems inconsistent and perhaps an oversight.