Installing the package thunderbird-gnome-support fixes this issue. This package should be installed automatically at upgrade / install, but it isn't.
-- thunderbird won't automatically start web browser when user clicks on http link https://bugs.launchpad.net/bugs/560720 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
