Very recently Minecraft has been crashing a lot with 1.18 experimental mode. 
this has happened before in 1.16 but has never been as bad as this. 
Usually I would be fine with this but now I am not for when it kicks me and I log back in it has deleted some of me and my friends progress. 

For example once I was renaming my shucker box with very valuable things in it it named for me gave me the achievement “organised wizard” then immediately kicked me i log back in and the shulcker box was deleted. we looked if it had glitch somewhere for ages we gave up and started to grind again then all of our over powered villagers get deleted when we are kicked. I am not able to upload any proof because it happens randomly.