The Bug:

Maces enchanted with wind burst don't reliably protect players from fall damage.

Please note that this issue is not a duplicate of MC-269985. MC-269985 talks about how the wind burst enchantment causes you to take fall damage after being boosted up. This ticket (MC-270687) talks about how maces enchanted with wind burst don't reliably protect players from fall damage.

Steps to Reproduce:

1. Obtain a regular mace and summon an armor stand.
2. Teleport yourself up 50 blocks in the air by using the command provided below.

   /tp @s ~ ~50 ~

3. Just as you hit the ground, use a mace smash attack on the armor stand and observe how you're protected from fall damage.
4. Give yourself a mace enchanted with wind burst by using the command provided below.

   /give @s minecraft:mace[minecraft:enchantments={levels:{"minecraft:wind_burst":3}}]

5. Repeat the above steps but this time use the mace enchanted with wind burst.

Observed Behavior:

Players aren't reliably protected from fall damage.

Expected Behavior:

Players would be reliably protected from fall damage.