Discovered while testing and relates to MC-239084. I believe this constitutes a valid parity issue as dropped items were made 3D in Bedrock Edition 1.16, and therefore this did not apply in prior versions.
The bug
The item pickup animation in Bedrock Edition involves the item becoming physically spammer in the process. This does not appear to happen in Java Edition, causing a parity discontinuity.
How to reproduce
Approached a dropped item
Observe closely how it appears when picked up
Expected results
In addition to approaching the player, the item would become physically smaller in the process.
Actual results
It remains the same size.
For instances such as this one we don't expect full parity.