I can confirm this behavior and it seems like it is a "new" bug. My last Evolution update was on 12/02/2010:
dpkg.log.1:2010-12-02 18:03:13 upgrade evolution 2.28.3-1+b1 2.30.3-5 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to evolution in ubuntu. https://bugs.launchpad.net/bugs/685019 Title: Evolution - "Outbox" glitch with "mailto" links -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs