The bug
If a hopper is under a trial spawner, and the trial spawner produces loot, the hopper will not pick this loot up. This is inconsistent with Bedrock Edition, where this does in fact happen.
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Comments 5
Wouldn't the full blocks blocking hoppers change also impact this issue? Note that loot tables drop 1.2 blocks above the bottom center of the trial spawner, which would be outside the range of the hopper anyways.
There is a block tag that explicitly permits hoppers to pick up items in full blocks (see: bee nests, beehives).
Adding trial spawners to this tag would have no effect, since the items aren't inside the block, they're above it
Thank you for your report!
However, this issue has been closed as Working as Intended.
This is working as intended, and we will be tracking the difference as a Bedrock bug at MCPE-178305. If you need help or have a suggestion you might like to follow a link below.
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Bedrock has this behavior because of this bug: MCPE-178305