Updating the Outlook-OXtender via Update Server doesn't work

Concern:
When trying to update the Outlook-OXtender via an Update Server as discribed in chapter 4.2 of the Outlook OXtender-Manual the update procedure is not finished on the Windows client side and the user will not have an updated OXtender version after a new start of Outlook.
Solution:
This is a known issue, currently no solution available.