I am on a PC PVP server, official # 1312 (EU). I am missing 4 crafting thralls from their stations in my base. None of the walls or doors have been destroyed. They are simply gone. Is there something I may have missed, or is this a bug that other people have also experienced?
Were they in benches that were next to windows? 
Ah yeah, you can still loot through walls 
(on PC at least)
Yes, they were, now that you mention it. OK, learn and improve.