There is no way to place water next to, above, or below a waterloggable block if the only surface you can click on is a waterloggable block. It always creates a waterlogged block, would be nice to be able to shift click a waterloggable block to place water next/above/below it.
Linked issues
Comments


Duplicate of MC-126906.
Possible duplicate of MC-126906
(Although that ticket deals with a bunch of different issues)