When I have a multi-page report displayed in the HTML5 Report Viewer, and I scroll through the pages, sometimes the page number may not update for the current page that I am on.

This occurs most often with the first and last pages of the report. It seems that it might be an issue of the report viewer not switching the focus on current page. If I left-click in the area of the report currently displayed, the focus changes, and that seems to be enough to cause the code to update the page number input as well.