LocalAnchor HyperLink Does Not Work on Server

I have a report with two sub-reports.  The first report links using a  hyperlinkType="LocalAnchor" with a valid hyperlinkAnchorExpression.  

The second sub-report has a report element with a valid anchorNameExpression.

The link works in iDesigner when I run the master report.  The link works in a PDF that I download from the server.  

The link does not work on the server when viewing the report in HTML.  The link expression is in the form:

jasperserver-pro/flow.html?_eventId_navigate=&pageIndex=19&_flowExecutionKey=...

The pageIndex is always one page short.  So the above link should be pageIndex=20. 

Page numbers are correct in the report. 
Adding or removing page breaks does not help
Problem only happens on server.

Thanks for the help.