When you enter a nether portal with a dog that follows you (Is not told to sit) the game will either crash when you’re trying to enter the nether or when you try to leave the nether with your dog. After the crash, the dog returns to the location where you first entered the nether portal.

Steps to Reproduce

1. Tame a dog

2. Tell it to stand

3. Have it enter the nether with you

4. If the game hasn’t crashed after entering the nether. Have it leave the nether with you.

5. The game crashes and your dog spawns next to the nether portal you first entered the nether in.