Mined two inventories worth of basalt, most was put it in a chest in the nether and more was still in my inventory when I logged out. When I loaded in the next day all of the basalt had disappeared from the chest and my inventory. All of the basalt I had mined was still missing from the world.
I am not sure, but I believe this happened between updating from 1.16.0.58 to 1.16.0.59
Thank you for your report!
We're actually already tracking this issue at MCPE-74369, so I will resolve and link this ticket as a duplicate.
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