[mod portal] Login flow is weird

[Jorn86]

When I first open a page on the mod portal, it shows an option to log in. When I click it, without having to do anything else, I then see a page with "Success - you are logged in", and a 404 message below it.

This sounds to me as if my login is actually remembered, as it should be, but it's not recognized until I open the login page.

[ickputzdirwech]

see 87077