Water within waterlogged decorated pots doesn't flow

The Bug:

Water within waterlogged decorated pots doesn't flow.

Steps to Reproduce:

1. Summon a waterlogged decorated pot beside you by using the command provided below.

   /setblock ~1 ~ ~1 minecraft:decorated_pot[waterlogged=true]

2. Look at the water within the waterlogged decorated pot.
3. Take note as to whether or not water within waterlogged decorated pots flows.

Observed Behavior:

Water doesn't flow.

Expected Behavior:

Water would flow.