This might be related to a bug we are fixing.
This issue appears when the user is listed multiple times in section Users of the Configuration\User Access & Roles tab and could be solved by deleting the duplicate users.
It is recommended you check if the concerned user is listed multiple times in section Users of the Configuration\User Access & Roles tab. If multiples users exist, move all tickets and data for the duplicate users to one designated user and delete the duplicate users afterward. Make sure only 1 user entry remains. Next to each user there is a button to transfer the data, first select the user you want to transfer to and then select the user from whom you want to copy. Afterward, you can set the correct role for the concerned user. Please note, you do have to be logged as an administrator to complete these steps.
