Unfortunately this is a different bug with the same manifestation and we sincerely apologize for this omission on our end. We've already identified the cause of the problem and it would be addressed in the next Telerik Reporting release.
For the time being, as a workaround, please use either the suggested approach in the second post of this thread, or apply conditional formatting so that when items are empty it would set the item Visibility to false.
Please excuse us for the inconvenience. Your Telerik points have been updated for bringing this to our attention.
the Telerik team
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