Loot from blown blocks is put together in a shared pool and randomized across all broken block positions, resulting in random stacks dropping from random places.

This doesn't make any sense to say the least

Suggest keeping dropped stacks in positions of blocks they blew with, possibly adding them some velocity vector opposite to the vector to the center of the explosion adding some scatter effect of the dropped items.

https://youtu.be/pTMX3hX7mZE