Replication steps:

1. Open new creative world

2. Put down a chest with two blocks stacked behind

3. Place a hopper on top facing into the top block

4. Place any item into hopper and note that the item doesn't transfer

5. Remove hopper and place a solid block on top of the chest

6. Place a rail and hopper minecart on top of the block

7. Destroy the block and check the hopper minecart to see the railing inside; if you picked up the railing instead, place any item in the minecart and note it staying in the minecart

Expected behaviors:

1. Hopper will transfer item to chest below

2. Hopper minecart will transfer item to chest below

Observed behaviors:

1. Hoppers only transfer to a chest  if facing straight down into chest

2. Hoppers will deposit to another hopper i_f facing into it_

3. Hoppers will pull from chests if straight down or directed into another hopper only

4. Hopper minecarts don't deposit to chest at all but will deposit to hopper