Gloktah

I assumed that might be the case, but I haven't tried crafting any other blueprint structure as of yet.

When you're sailing with other players onboard that are offline, sleeping on your ship, and you change region they will be thrown off the ship into the sea.

I put down a Fine Large Cannon (as in the green type, from a blueprint) and picked it back up to place it down differently, when I did so it reverted back into being a regular Large Cannon, without any of the bonuses from the Fine quality. This happened with all Fine Large Cannons I placed down and picked back up.

Yeah, I realized that there is rapid decay in freeports now after looking it up. Still, that you couldn't leave a ship there for more than a couple hours seems a bit... shit. Even more so that there's no sort of notification in-game making you aware of it.

Now after having spent the night to build a new schooner, upon logging in it's gone again as I had anchored by a freeport to get dye to paint the ship ..

As far as I know there wouldn't even have been much we could have done to prevent this, since the ranks and permissions for crew members was seemingly bugged and stopped working after the leader went offline.

I got back on a little while ago after having some dinner, to find out that I had died, and strangely somehow my crew no longer had beds on the island we'd been setting up a base on. I manage to respawn on a different island to double check the map, then the crew log. Meanwhile I'd been gone an inactive member of the crew had apparently decided to get on and start demolishing our structures and ships.