Step to Reproduce

1. Place Chest to bottom
2. Place Hopper to top of Chest
3. place mud, soul sand, dirt path, and farmland blocks to main top
4. Drop any items to Main top of mud, soul sand, dirt path, and farmland blocks
Observed results
Items dont Sink through mud, soul sand, dirt path, and farmland blocks Except Minecart with hopper

Expected behavior
Items Should be Sink through into mud, soul sand, dirt path, and farmland blocks