[Bioc-devel] \VignetteIndexEntry

I am puzzled by the interpretation of the %\VignetteIndexEntry directive by the build system. On http://www.bioconductor.org/packages/devel/bioc/html/genefilter.html of the four vignettes for this package, two are listed with titles
1.  <empy title>
2.  Additional plots for: Independent filtering increases power for detecting differentially expressed genes

whereas in the .Rnw files, these two lines are provided ( https://hedgehog.fhcrc.org/bioconductor/trunk/madman/Rpacks/genefilter/inst/doc  )

1. %\VignetteIndexEntry{Diagnostics for independent filtering}
2. %\VignetteIndexEntry{Additional plots for: Independent filtering increases power for detecting differentially expressed genes, Bourgon et al., PNAS (2010)}

both of these do not match what is rendered (the first more obviously so). Anybody have an idea what's wrong or how to properly do this?

        Best wishes
        Wolfgang