According to the wiki:
"The Protective Barrier Generator first appears in the players inventory as the Broken Protective Barrier Generator which requires to be repaired before becoming functional. Once fixed, this item will grant the player a 30x30x30 cube (or 82x82x82 in blocks) in which they will have several abilities:
the power to pick up placed blocks with a hammer after the timer would normally be up,
immunity from damage when logged out,
placed blocks cannot be damaged by other players,
other players cannot place any blocks"
I have been playing on the public server EXPLORE NA 48 with no issues until I logged in today. While I was offline, players were able to break a locked door, glass windows and three locked chests inside my cabin. From the description of the protective barrier, I thought this was not possible. Did I not set up my barrier correctly or is this a known bug? I attached some screenshots.