Items glitch inside the piston head when pushed through powder snow or cobwebs

Item entities can glitch inside the piston's head (block 36) upon being moved, if they are inside cobweb/power snow, and under some special conditions.
This issue is specially bad since powder snow being introduced (1.17) but it can be replicated in 1.14 with cobweb.

How to Replicate:

Open the world download attached in 1.14

Power the command blocks, which will summon multiple item entities
Power the piston

Expected behavior:

All entities move towards the next block, and exact same position for all

Observed Behavior:

Some entities glitch inside the piston head. This means they'll all randomly spread across the block.

As mentioned earlier, this issue becomes specially problematic for powder snow (1.17+), since this can be moved by pistons. Powder snow is very commonly used for item aligners, to slow down entities, etc. It is crucial to fix this issue. A video showcasing the issue will be attached too (recorded in 1.21).