crashes become common in 1.17.2

Thank you for your report!
However, this issue is Invalid for the bug tracker.

Crashes such as these are logged automatically by the game or realm server and investigated further by the development team internally, so they are not generally kept on the bug tracker.

If you can provide a list of steps that someone else can follow to reproduce a crash then feel free to create a new report. Please be sure to always search for duplicates before creating any new report. Please see the Bug Tracker Guidelines for more information.

Sometimes when a crash occurs the world will revert to a previous saved state. This specific issue is tracked as MCPE-12347.