Same issue here. One of my mayor title dissapeared and I lost my bonuses.
i have also submitted a ticket to <[email protected]>
as my DSS pick is in less than 24 hrs from now.
So, apparently there was a bug fix. Trying to find/request a public notification.
Seems people had an extra mayor title that they then proceeded to upgrade... while the mayor title in a package is not upgradeable.
That said, you are probable now missing 1 mayor title?
I'll post more as I get more.
Edited: Seems like no mention of the issue will be released here. If you need details, open a support ticket.