Viewing Reports on iOS are Blank

Using the Power BI App V4.6 on ios9 iPad I get the following behavior when I try to drill into a report.  I start at the Dashboard and click one of the tiles that links to a report, then click "Open Report" at the bottom.

The report opens briefly with the refresh circles over the report tiles, then after 2 seconds the whole page goes blank.  I still see the Report Name at the top and the "Close" link at the top, so I can close the blank report and go back to the Dashboard.