When I hover over an item in a chest, the amount of items in a stack of items also in the chest show through the item name tag. It's quite difficult to explain, so I hope the screenshots are pretty self explanatory. This appears to be a Snapshot - specific issue as I have tested this in the previous snapshots for 1.16 and in 1.15.2 and the bug doesn't appear to be there.
Environment
Java Edition, 1.16 snapshot 20w21a
Thank you for your report!
However, this issue is a Duplicate of MC-184609.
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