ePortfolio: Source link in wiki artefact doesn't link back to single page in wiki, only to index

when a wiki page is collected, its always a specific single page. When viewing the wiki artefact in the eportfolio module though, the link "view source" leads back to the index of the wiki where the respective page is located, but not to the specific page. Just like with all other artefacts, the source should be shown, in this case the single page in the wiki and not the Index