What is the problem?
If you place a hopper minecart on a container, such as a barrel, the items inside the minecart will not be transferred to the barrel.
Regardless of the container, the minecart will suck up items on top, but as just mentioned, these are not passed down.
The only exception is if there is a normal hopper under the minecart hopper
Apparently, that's always been the case, however, I found contradictory information on the internet, and I believe that's how it was.
Comments 3
Hopper minecarts don't transfer items down into containers and they never have. You need to a hopper underneath to extract items from them.
Pretty sure that is works as intended, you need a regular hopper below to take items out.