Quitting a server while a screen title is being displayed and then immediately joining a singleplayer world will cause the text to appear in that world as well. I have managed to recreate this bug a few times.

The amount of time the text stays on screen seems to be dependant on how long the server displays it for. For example, the game over text from the screenshot attached stayed on screen for around 5/6 seconds, a text introducing a minigame appeared for barely a second, while a countdown didn't appear at all (likely beacuse each number stays on screen for a second, not giving me enough time to join a world and see it). Waiting instead of joining a world immediately will cause the text to not appear.

I've only tried to recreate this bug in version 1.17.1

This issue does not interfere with gameplay.

How to recreate:

• Join a server
• Do something to make a title screen appear (one that will stay for some seconds)
• Quit the server and immediatley join a singleplayer world