[Malek]

Describe the issue: All helpers get removed from a building, the owner loses the option to add helpers until he transfers ownership to himself.

How to reproduce: Not sure. All my helpers lost access to my building, I could still lock it and check chests because I was the owner, but it didn't give me the option to add or remove helpers. I did have the option to transfer ownership though, I transferred ownership to myself directly and was able to readd helpers. Remove helper option showed no helpers listed, so they all got removed.