There is a bug I exploited where newer version of the beta can enter older version of beta that crashed my friend's game andakes him unable to play his map

There is a bug I exploited where newer version of the beta can enter older version of beta that crashed my friend's game andakes him unable to play his map.I also realised no won found it or reported it because sometimes it also works for older version and it's playable except the new features are not available. It was not fixed until 1.16.0.20
52 it began from 1.16.0.57 (early beta)