Game mode: Online
I play on server 1522, have a house in the middle of “iron valley” west of The Summoning Place, between the spawn points for the alligator world boss and the scorpion world boss. I had to give up on placing fish traps in the lake to my south; every time I logged back in the next day, they’d be gone.
Last night I placed a map room, my first, right next to my house. When I logged in this afternoon, it was gone, as were most of the signs I placed around it. There was nothing in the Event Log about them.
Steps on how to reproduce issue: