How can I fix Outlook To-Do bar flashing when GP or PolicyPak does a background refresh?

For anyone experiencing the Outlook To-Do bar flashing when GP or PP does a background refresh, MS has released KB3191883 May 2018 which solves that issue.
https://support.microsoft.com/en-us/help/3191883/may-2-2017-update-for-outlook-2016-kb3191883

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