[MC-135098] Animal spawn eggs occasionally spawn baby animals

Using a spawn egg will occasionally spawn a baby rather than an adult, regardless of whether it was spawned on another adult.

(List may be incomplete)

Get a spawn egg, for example a horse spawn egg.
Use the horse spawn egg. (not on another horse)
→ ❌ Notice that a baby horse has been spawned (after few tries)

Linked issues

Can confirm for 1.13.1, this applies to every mob that can spawn as a child in survival.

Confirmed for 1.13.2-pre1.

Confirmed for 1.13.2-pre2.

violine1101 2019-09-16T11:32:32Z

This only seems to affect certain mobs (I just noticed ocelots and horses, donkeys and mules). If I missed some, please mention them in the comments.

Also, this might have been fixed in 19w37a (see MC-160999 and MC-160945), will test that further.

Why is this a bug? It makes more sense with the new feature of baby animals sometimes spawning in groups.

violine1101 2019-09-16T16:29:58Z

My point is that this bug doesn't seem to happen in the latest snapshot. I've tested this now and it indeed seems like this issue has been fixed.

And it was a bug that existed already before this snapshot, obviously.