The description of the spell Leomund's secret chest says:
You hide a chest, and all its contents, on the Ethereal Plane. […]
This question asks where the chest is hidden, with the single answer being that it's a matter of worldbuilding.
Are there any examples in rules or lore of chests hidden on the Ethereal Plane using the spell then being found?
I am first and foremost looking for official published 5e references, but any published material from previous editions would be interesting.
As both a player and a GM, I'd like to know of any such examples so that I can discuss the spell from an informed position.