In my Base i have build a villager breeder and a trading station. The breeder has a size of 9x9 blocks surrounded by glas with a glas roof. The trading station is a one block space for the villager wich is surrounded by glas and has a workstation in front of it. In the last weeks the first villager disappeared fromnthe trading station. I logged into my server and saw that the chamber of one villager was empty. Yesterday after a long while I went to the breeder and saw, that one of the two villagers in it was gone. There was no way for them to get out their chamber/rooms, which means that they were disappeared because of a bug.