Strange liquid behavior because of a small gaz tile

Because of the rule that prevent liquids from flowing on an adjacent tile with a gaz different from the one above (typically carbone dioxide in a room full of oxygen), it is possible to encounter this situation :

liquid view : 

gas view : 

As you can see, there's a small amount of water, on the left, that flow ABOVE a carbone dioxide tile ! O_o

I guess there was only chlorine above the carbon dioxid, so the water push it to the left.

Iris.sav