The bug
Hoppers are able to pick up item entities inside them, even when they have a container above (see also MCPE-80555).
However, when there are currently items flowing through the hopper from a container above, the item entities won't be picked up causing them to despawn eventually.
Reproduction steps
See
[media].
Build two hoppers above each other
Let item entities slide on ice into the lower hopper
✔ The item entities are picked upNow put items into the top hopper and repeat step 2
❌ The item entities are not picked up, the hopper prefers transferring items from above
Linked issues
duplicates 1
Attachments
Comments
GoldenHelmet
Hoppers with container blocks above (such as the second hopper in the attached video) are assumed to be dedicated to that container per Prof. Mobius comment on MC-8864. This report is not describing anything different. Resolving as a duplicate.
It could be because the items are going too fast in because of the ice or the hopper cannot pick up the items because items are already going in it.