When I'm in the Unanswered Tab and click on a tag in Interesting Tags it takes me back to questions instead of adding it to the Unanswered Tags link.
Link of c++ in the normal tagbar:
Link of c++ in my Interesting Tags:
Using Firefox 3.6.12 on windows 7 64bit system
There is now a feature request open for this:
Unanswered Tab and Interesting Tags