When you fall into any part of the stalagmite that's not the tip (frustrum, middle, base) you recieve no damage from the fall, even if you fall from height limit all the way down to bedrock.
What I expected to happen was:
Recieve some fall damage multiplied by 2.
What actually happened was:
Long fall particles appeared, but no damage was dealt at all.
Steps to Reproduce:
1. Build a stalagmite of 2 blocks or higher
2. Build a tower to its side, or just fly up to the stalagmite's height
3. Jump down and try to land on any part of the stalagmite that's not the tip