Tall seagrass only generates lower part when ocean monument is in the way

The bug

Tall seagrass only generate the lower part when an ocean monument is in the way.

To reproduce

Seed: 4373241205666815302
Coordinates: /execute in minecraft:overworld run tp @s -12007.58 36.91 -22718.16 -541.90 -0.34

Expected behavior

No part of tall seagrass would generate when an ocean monument would prevent it from completely generating.