I have added Power BI reports in PowerPoint using the Power BI Add-in. They look and work great in every "Presentation View" option (Normal, Outline, Slide Sorter, Reading View) from the View tab except for the Notes Page view. There, the Power BI reports are blank. If I go to Print Preview or Print a Notes Page, it works fine. At one point, one of my 3 reports in this file did show up, and now none of them work anymore from the Notes Page view.