Lush Cave Vines Have Greater Chance of Nearly 100% Covering in Ice Biomes Near Lush Caves

Steps To Reproduce:
Step 1: Go to a Ice Biome.
Step 2: Observe it.
Step 3: Repeat.

Observed Result: Lush Cave Vines Cover Entire Biome.

Expected Result: Lush Cave Vines Shouldn't Cover Entire Biome