I've only just picked up Ylands so I don't know if this is an established or well-known issue, or even a feature, but I had a look through the other posts and didn't see anything similar.
I'm trying to build a house on stilts on (over) the beach. I get some logs and place them vertically in the water, sunk one block into the sand, then rows of horizontal logs for bearers across the tops. I go to get more timber from some trees only a few metres away; when I return one of the posts is gone. I assume I missed it, and am replacing it when a bearer disappears, this time while I'm watching.
Are the logs being damaged by the water? Is the sand the problem? Or is this just a bug?