LAN server crashes when exiting world

If I turn a world into a LAN server and turn cheats on, it crashes once I go to save and quit the world. I had this issue back in 1.8.4 but it got fixed in 1.8.5. It's back now.

What I thought would happen: The game would quit and take me to the title screen like normal

What actually happened: The game froze and crashed to the point where I had to force quit completely

Steps to reproduce:
1. Open world
2. Open the world to LAN and turn on cheats
3. Close the menu (actually playing the game for any amount of time doesn't matter)
4. Press "Save and Quit" in the pause menu
5. Game freezes and crashes (Force quit needed)