The Bug:

You can use spawn eggs to spawn baby entities in adventure mode.

Steps to Reproduce:

1. Obtain any spawn egg, for example, a villager spawn egg, and use it to summon a villager.
2. Switch into adventure mode and use the villager spawn egg on the villager.
3. Take note as to whether or not you can use spawn eggs to spawn baby entities in adventure mode.

Observed Behavior:

You can use spawn eggs to spawn baby entities in adventure mode.

Expected Behavior:

You would not be able to use spawn eggs to spawn baby entities in adventure mode.