When you exit a world the scoreboard.dat file is not saved causing nothing to be saved but scores and scoreboard settings can be change and saved ingame until you exit the world.
Environment
Windows 10, Java 8
When you exit a world the scoreboard.dat file is not saved causing nothing to be saved but scores and scoreboard settings can be change and saved ingame until you exit the world.
Windows 10, Java 8
Hm, can't reproduce :/