XBOX, single player. I build trebuchet platform with trebuchet on tower of my building. Also build two ladders connected to each other and then connected to hatch. After quit the game and logging back the whole trebuchet thing is missing. Also bottom ladder is missing, upper ladder connected to hatch is not. Building decay setting is off.
Had the same, playing on private server. Not sure if it was after a reload but my trebutchets also disappeared. I am sure they got not destroyed or removed. Hope that will be fixed on relaease day.