Cannot chat in a singleplayer world

Put the summary of the bug you're having here

What I expected to happen was...:
Maybe i could talk in singleplayer so i tried

What actually happened was...:
it said in red letters Cannot send message

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. Go to singleplayer and talk...
3. It will say in red letters Cannot send message...