I think that blue post on the forums about items being invisible to us, but they could see them, was related to the warband banks - people got confused because someone else reposted it as if it was related to guild vaults. The blue then came on to clarify it was about warband banks.
I think some of the misinformation in addition to that though, is because people have been getting a variety of information from tickets … including this one:
Which suggests they they would be restoring the lost items automatically. Whilst it doesn’t say “all items”, that is the intimation.