I went to west from Elektrozavodsk to the next city and went into a wooden cabin/house, to setup a fireplace at the indoor stove, so i can cook my food.
When trying to split the amount of bark i had in my inventory, but i didn't have room for it so it got dropped to the floor, it bugged through the floor of the house, maybe to the grass floor below the house so i couldn't reach it anymore.
I tried it with different items, it always gets dropped through the floor.
Just dropping stuff inside the house in front of the stove dropped the loot unreachable for me.
Here is a screenshot of the location on the map: https://i.imgur.com/vh4fJ6O.png
Here is a screenshot of the house: https://i.imgur.com/Gnv65Du.jpeg
The game version is: 1.20.155981
(The actual building location could differ. I am not too fond with the layout of the map yet, im new to the game so i still need to learn my way around and understand how to get to know where i am.)