Using alt tab under normal but fast speed will crash the game. You will loose some things that is not auto saved like placed objects
Comments 2
Thank you for your report!
However, this issue has been temporarily closed as Awaiting Response.
Is this still an issue in the latest version? If yes, could you please add it to the affected versions (or mention it if you are not the reporter)?
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Can’t confirm, my minecraft didn’t crash on 1.21.82