Doesn't place grass.

[Intoned]

I'm trying to use the latest autobuild with factorio 1.1.53 (win64) with seablock and I can start wtih 2K grass, which I can manually place on water, but any grass I blueprint is not placed. This does work with landfull, but not grass. I have not tried any other soil type.

[jodokus31]

This is intended. In seablock, you get your placed landfill refunded, when you place it manually on top of existing land
However, autobuild can't do this for some technical reasons and you would loose the landfill. So it doesn't place it and you don't loose precious landfill. If you want to place it, you can do it manually and get your landfill back or wait for proper bots.