Btw this affects all versions currently.

Info:
If you are on a server with a title and you leave while the title is active, you will have the title to the other server you connect or even singleplayer. The only way to fix this is to go to singleplayer and display another title and wait until it goes away or restart the game.

How to replicate:
1. Join a server and get title displayed on your screen.
2. Leave the server.
3. Join another server or singleplayer.
4. You got the bug.