When breeding two Hoglins with a Crimson Fungi it fails for them to breed till you right click one of them again with the Crimson Fungi.
- Get two Hoglins
- Get a Crimson Fungi
- Breed the Hoglins
→ Notice that they just get close up and don't produce a baby
- Click on one them again with the Crimson Fungi
→ Notice baby is made