User not shown in backoffice (ID: -1)

Hello,

After upgrading to Umbraco 12.1, the user with ID -1 is not shown in backoffice when navigating to Settings > Users.

Is this a bug in Umbraco or in my sql database? Feels weird to have an ID of -1. First I thought it might be because this is the super admin that created the instance in the first place.


This is a companion discussion topic for the original entry at https://our.umbraco.com/forum/112462-user-not-shown-in-backoffice-id-1