Mobs that perish within the presence of sculk catalysts whilst airborne don't cause sculk to initially form

The Bug:

Airborne mobs that perish within the presence of sculk catalysts will cause sculk to spread, but not initially form.

Steps to Reproduce:

• Place down a sculk catalyst on top of any blocks that sculk can replace.
• Summon a mob that's airborne.

• /summon minecraft:creeper ~ ~1 ~ {NoAI:1b,Health:1f}

• Kill the mob and watch the blocks beneath it closely.
• Take note as to whether or not mobs that perish within the presence of sculk catalysts whilst airborne cause sculk to initially form.

Observed Behavior:

Airborne mobs that perish within the presence of sculk catalysts only cause sculk to spread and not initially form.

Expected Behavior:

Airborne mobs that perish within the presence of sculk catalysts would cause sculk to spread and initially form.