* Side note: items breaking/being lost when breaking open a chest is something that should be a thing, though I thought it already was
Items shouldn't be lost when breaking things, that's retarded and overly punishing. The major downside to breaking open chests should be that it is loud, and that's it. Durability damage from breaking things should be the same as hitting anything else in the game with your weapon.
If Larian wants to implement some kind of fragile items list into the game, items that would be broken from simply being shaken around (snow globes, my favorite weapon), then sure those can get smashed if you smash a chest and they're in it.