In an effort to troubleshoot, I have tried checking on the same county in Alesia from an account that does not have a title (so they would get a pure $xx claim button? That seems to work, except for the after naming, it crashes, issue.
With my acct Gearkhan who does have a title tries the same, I get a white claim button with the message. "This property cannot be claimed because its reserved for a winner of a Free Kingdom Title or one of their vassals." .