I found diamonds at y level 16 and i mined some lapis and it just straight up disappeared

For mine Diamonds and gold lapis you need iron pick axe or Diamond pick axe

I did use a iron pickaxe.

Okay strange maybe bug or something else

Cleaning up old tickets: This ticket has not been updated recently (~1 year+) so is being closed as Cannot Reproduce. If you feel this is still a valid issue then please comment, or create a new ticket following the Issue Guidelines.

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