Water physics don't work on Sea Pickles

Apparently Sea Pickles don't behave correctly when water is poured on top of them.

The exact way I reproduced the bug: 

Broke glass roof with water above it, it poured over sea pickles I put down, and avoided them. (I tried this with all variations of the pickles).

If other Sea Pickles are placed nearby it, the water will simply go around them.