Duplication by force-quitting game quickly after placing items in container.

Note:
I think this glitch only existed when 1.16.0 launched.

Good day, Mojang.

So today, it’s time to report it. So lemme explain it. I didn’t not understand the glitch, but I think it goes like this. So destroy the chest, and re-place it again. Leave the world.(Host must do it) Join back. Then put all the stuff in your chest mine 4 dirt (Y=~1, X=~1 or Z=~1) Destroy it like a square(BUT 4 BLOCKS), then quickly quit the game. Close the app, don’t leave it open, go to your world. Boom it’s duped your hot bar shows the items, and the chest shows the item. This may clear your inventory up.

Steps to reproduce

1. Place a chest
2. Break the chest and re-place it (Do not put your items inside)
3. Leave the game
4. Join back
5. Put your items inside the chest
6. Destroy 4 blocks in front of it (Y=~1)
7. Quickly close Minecraft without using the "Save & Quit" button (Alt + F4 can be used on Windows 10)
8. BOOM! It’s duped. But you could lose your items.

Expected Results

Your items are not duplicated.

Observed Results

Your items are duplicated.

Did not understand? Look at this YouTube video to see what is this dupe glitch about; MINECRAFT DUPLICATION GLITCH 1.16 (Any Item) PS4,XBOX,PC,PE,SWITCH or check for more videos go to this link. It will show a search results of them. Youtube > Search Result - Duplication Glitch Minecraft 1.16. Thanks!