Reporting Services does not display Hyperlink for Placeholder with Go to URL Action
Got really puzzled about this thing. Fortunately Christian Norbakk had the explanation of the problem:
When using Reporting Services in Sharepoint Integrated mode a Placeholder with Go to URL action will not render as a hyperlink for VALID internal links. It will, however, work for external links and for INVALID internal links. Now if that's not a but I don't know anything anymore:-)
Notice that the links work in Visual Studio Preview mode for the report. It's only after you deploy the report that all valid internal links are stripped.
Christian also told me that Øystein Garshol had managed to work around the quirk by applying a tiny javascript wrapper around the valid internal link which seemed to trick ReportingServices out of eliminating the link. That will be my next attempt too.
Nag me in comments if I forget to update this post with how it went..