Summary
Nether blocks (nether wart block, basalt, etc.) are placed first before overworld blocks (dirt, grass block, etc.) in the creative inventory under the Nature tab.

How to Reproduce
1. Go into Creative game mode.
2. Open inventory.
3. Go to Nature tab.

Observed results
The first 9 blocks listed are Nether blocks.

Expected results
Overworld blocks (like dirt) should be placed first, while Nether blocks should be placed later in the inventory for consistency.

Image