Copper Blocks placed before Beta 1.16.220.51 have placeholder textures in newer versions

Hi, it's not just the copper, your coordinate shifted 64+ Y coordinate... You may find other bugged stuff, like chests, shulker boxes, they will be empty, double chests will be single chests and wiped.. Potions on cauldrons will be water in cauldrons, any head will be a skeleton skull, sticky pistons does not pull blocks unless you break the block an put it back, banners will be wiped, meaning they will be gray/black. Item frames will be wiped.. Atleast that's what happened to me but idk if it happened to you.. Your chests is fine.. Hopefully the rest will also be fine... But your coordinates has shifted i assume... Or are you on a mountain? 

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Resolving as Won't Fix. Copper Blocks placed before Beta 1.16.220.51 will have placeholder textures in newer versions due to block ID changes.

It was fixed in Java though: MC-213802