Bubbles turn into gas at mesh tile boundaries, instead of merging with the gas inside the mesh tile.

I’ve got a pond full of coral producing oxygen. The pond is surmounted by a casing of prefamulated amulite roof of zinc mesh tiles. The oxygen bubbles from the coral turn into gas and displace the water underneath the mesh tiles instead of immediately merging with the oxygen gas above the water (but inside the mesh). Above the mesh tiles is my dining room, which has lots of oxygen gas in it.

If I raise the level of the water so that it is inside the mesh tiles then the splashing stops. In the attached save I have just made the pond one tile deeper so that I can fit in the autosweepers. Before that the water level was inside the mesh tiles and the bubbles didn’t cause as much chaos. On the other hand when that happens the beacon fish cannot reach the surface to breathe.

Soggy Burrow.sav