Just now, I went to the nether in creative (Before I went in I set the difficulty to peaceful and then set back to normal, after I set it back to normal I went to the nether). And I found nothing spawned like ghasts, pigmen, etc.

What I expected to happen was...:
The nether would have some pigmen and ghast.

What actually happened was...:
Instead, nothing spawned and I'm alone.

Steps to Reproduce:
1. Before going to nether, set to peaceful and then set to normal.
2. Go in the nether.
3. Notice that nothing spawned. How I'm supposed to have fun in the nether now? (Note: It doesn't always happens)