the top of bugs.g.o has a Store link that points to: https://store.gentoo.org/ ... which is 404 :). guess it needs updating to: https://www.gentoo.org/inside-gentoo/stores/ and/or store.g.o should redirect there it also has a "Wiki new!" link. let's drop the "new" part now.
Created attachment 403754 [details, diff] 0001-header-update-Gentoo-links.patch
*** Bug 559554 has been marked as a duplicate of this bug. ***
change is live now -- top bar of links is sane https://gitweb.gentoo.org/proj/gentoo-bugzilla.git/commit/?id=6113c9150ae4728e51dcc2b81a2eac08c7869657