Archweb login cookies are now secure-only
 

I switched cookies in the developer interface to be secure-only as of
this morning. This means you won't see any of the developer stuff if
you are viewing the site over plain HTTP once your existing cookie
expires. You will be redirected to HTTPS if you are required to log
in, but devs/TUs may not see the links they are used to if you are not
viewing over a secure connection.

-Dan