Bubble columns don't form/disappear reliably when randomTickSpeed is zero

The bug

Bubble columns seem to rely on randomTickSpeed to form. When it is set to zero, this game mechanic is broken.

How to reproduce

1. /gamerule randomTickSpeed 0
2. Dig down a few blocks
3. Place soul sand
4. Place water above it
   →  No bubble column is formed

Note

The column will correctly form if the soul sand is placed last.

If a dispenser is used to remove the water, a permanent waterless bubble column is created.