i found some update problems in report viewer page navigation (Forms and Wpf). You can reproduce this issue with standard Stimulsoft demos.
When opening Stimulsoft Reports.NET Demos "Basic Reports / Simple List" i see a report with three pages shown in view mode Continous. After scrolling down one page via mouse wheel or scroll bar the page navigation says then "Page 2 of 3". Correct so far. But after scrolling back to page one again the text in page navigation did no change anymore.
When scrolling to the last page the text in page navigation changes to "Page 3 of 3". But when scrolling slowly to page 2 the text changes directly to "Page 1 of 3". All in all it's a little bit strange update behaviour of page navigation text.
I think it had something to do with zoom factor and the definition of "what is the currently shown page". When using 82% zoom factor page 2 is always the shown page, even if i scrolled to top of report.
When using page navigation arrows everything is ok. But it is not the same behaviour when using mouse wheel or scroll bar. Sorry

I'm using latest prerelease build 2014.1.1801.0.
Kind regards
Thorsten Pontow