Loading structures when there are none causes lag

After generating a world with no structures, I used the /locate command out of curiosity. The server immediately froze and could only be closed through task manager

What I expected to happen was...:
Either the game wouldn't let me fill out the command

or the game would have stopped itself after I entered the command

or the game would have stopped trying after a little bit

What actually happened was...:
The game completely stopped until I forced it to close

Steps to Reproduce:
1. Create a world with the Generate Structures turned off
2. enter /locate biome <any biome>