overworld spawned in nether

Put the summary of the bug you're having here
overworld spawned in the nether
*What I expected to happen was...:*nether world
Describe what you thought should happen here

*What actually happened was...:*was in new area of nether and overworld spawned in the nether
Describe what happened here

Steps to Reproduce:
1. I was just going to X393 Z 486 in the nether
2. ...overworld spawned in the nether
3. ...