Jar Flies Off Shelf and Moving Boxes in Store Warehouse

Sharing a story from my mom.
She works as an order picker at Perekrestok. About a week ago she was walking along the shelves, and right in front of her a jar flies off the shelf. Thinking someone just bumped the shelf and it got pushed out by the other jars, she picks it up, puts it back, and sees there's plenty of space there.
She told some guy there about it, and he took her to a room with a computer where the camera footage is stored. And on one recording you could see boxes in the warehouse moving by themselves, in the middle of the night. Not just wobbling from something, but actually rising and lowering by a meter, exactly.
Another guy from there said, like "Lena, what did you expect, the store is cursed"

Of course it all sounds crazy, but I'm not a troll. It's half past midnight and I'm just incapable of making stuff up. And there's no reason to.