Players will build up fall damage in a certain way

How to reproduce:

Step 1: Place a soul sand Block

Step 2: Place a honey block 1 block above the soul sand 

Step 3: Place water above the soul sand

Step 4: Place some partial blocks that can block water from falling e.g. Open fence gates, Bottom trapdoors, Signs, etc.

Step 5: Run to one side of the honey block so you can bob up and down in a small height than without the honey block that will launch you higher

Expected results: Player will not take damage when going away from said bubble column + honey block contraption

Observed Results: Player will take damage the longer they stay there, the more damage it can deal and even cause death damage