Applications' conflict: Vienna and a browser switcher. Opens articles in a wrong browser

[scrutinizer]

In the browser switcher I set links from a certain site to be opened in Safari but when I click on "Open article page" with the article's title highlighted in Vienna it will stubbornly open them in Firefox. The view is set to the full HTML so when I click on any link inside the HTML page they open in Safari. Why Vienna chooses Firefox then?