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Thank you for your detailed steps to reproduce, I have passed your issue to our Development team for further investigation.
At this point no solution can be provided, but we have collected all details of the issue and reported them to Parallels development team, who keeps track reports from customers in order to prioritize fixes. There is a possibility that the issue will be addressed in the next Hotfix or Parallels Desktop release. Since your report is now being tracked in a separate system we are going to close out your support ticket, but we keep working on this issue internally.
We appreciate your cooperation and personal time spent on the investigation.