Chat deletes when relogging on a server.

What I expected: when I relogged on the server the chat would have the messages from before I first left the server.
What really happened: chat was completely blank when I relogged.
Steps to reproduce
1. Go on a minecraft sever.
2. open chat
3. type something in chat and send the message
4. leave server
5. relog on any server
6. open chat again.