I was exploring the Nether to see if the terrain generation had changed at all, and saw that none of the nether biomes were generating, despite it saying it was that biome. The Basalt Delta and Nether Wastes are fine, however.

What I expected to happen was...:
A nether with nether biomes

What actually happened was...:
A nether without nether biomes :[

Steps to Reproduce:
1. Go into the nether
2. find a biome other than nether wastes or basalt delta
3. realize theres nothing there