The Bug:
Mace smash particles are produced based on the blocks that players are positioned on instead of the position of players themselves.
Steps to Reproduce:
Summon a husk and obtain a mace.
Stand in between two blocks and perform a mace smash attack on the husk.
Look down and observe where the mace smash particles are produced.
Observed Behavior:
Mace smash particles are produced based on the blocks that players are positioned on which sometimes results in the particles being displayed in misleading positions.
Expected Behavior:
Mace smash particles would be produced based on the position of players.
Linked issues
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Comments

This behavior seems fixed in 24w13a with the new particles added:
Correction; after further testing, it is not fixed.
So, are you saying the particles always show up in the center of the block? I can confirm that. Relates to MC-189857 and MC-172739.