Crash when chatting

Put the summary of the bug you're having here

*What I expected to happen was that I would send a chat message in a Multiplayer server

*What actually happened was that when I pressed Enter, then typed my message, and pressed Enter again, the game crashed, it just closed. Like pressing Alt+F4, just shut down.

Steps to Reproduce:
1. Go into a Multiplayer server
2. Open the chat
3. Type something
4. Send it
5. ???
6. Crash