Ok, I think there's a bug here, which is quite ironic. I'm still getting reports that my bugtracker link is broken, and I think it is because the packages interface is pulling that field semi-randomly from various versions of the package, depending on factors I have yet to fathom.

For instance, earlier this morning the package overview page was showing the old broken bugtracker field, and now it is showing the correct one.

...And I just did a refresh of that page, and it is showing the broken link again!

ARGH.

EDIT: It is doing the same thing on the package instance page, too. Randomly pulling the description and bugtracker fields (but not changelog, interestingly) from old versions of the package, or the current version, depending on the whims of The Machine.