Using IE9, I am unable to open the OOB report viewer page's Export menu. I am able to do so with IE8 and varying versions of FireFox.
Has IE9 broken the Export menu in SSRS Report Viewer Control as displayed in SP2010 Report Viewer page?
When I view the report and use the "Compatability Mode" feature of IE9, the Actions menu is displayed and functions without issue.
I think there is an issue with IE9's rendering of the <menu> tag. This tag was deprecated in HTML 4.01, but was re-introduced in HTML5 with slightly different meaning and usage. Given IE9's push towards HTML5 compatability, I suspect this is a result of the new version of the browser trying to adopt HTML5 and/or eliminating support of some deprecated 4.01 tag.
SQL Server may not not be the correct product to log this against. The Report Viewer Web Part used on /_layouts/ReportServer/RSViewerPage.aspx uses the following control which I believe is responsible for rendering the menu items:
Assembly: Microsoft.ReportingServices.SharePoint.UI.WebParts, Version=10.0.0.0
This said the RSReportViewerPage.aspx is setup with an XHTML DocType:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
This should signify to IE9 to treat the menu items as it would have previously.
It may be more appropriate to log against IE9, but not sure where to do that. Hoping that by logging here we can "hop" over to IE9 feedback if appropriate.