Minecarts with chests don't have any loot when found - abandoned mineshaft

Please provide the the seed of the world and the coordinates

-5412933043437133865
x103 y19 z-18
Had to find the chest on creative mode on a separate save file because I had destroyed the minecart with chest. The chest in the creative mode has loot in it, which I think it might be something wrong with the survival save file.

Just a note, I was using a World Edit mod, though this was on a separate creative save file and separate user, the save file with the bug was not touched.

You probably opened the world in another version.