Comment 5 for bug 420353

With X.org bug triage I frequently fit the use case mpt describes in comment #3, and do find it useful to have a way to distinguish bugs that need forwarding from those that don't, however in practice I've found that doing this flagging via "Also affects project" without an external link doesn't really work well. See my comment on bug #333215.

Bug #333215 seems to be this same issue - the feature is not useful as implemented and can cause confusion. Both this bug and that one seem to indicate it should be made not possible to create an external bug watch against a non-Launchpad project without providing a link.