Seem to be having an odd issue on @gamingonlinux for me only on mobile, but others say they have seen it on desktop too.

On a cold load of a browser, it won't detect the login cookie until a page refresh.

Anyone know why that might happen?

I've never seen it on desktop (chrome / firefox), but I can 100% reproduce if I swipe away Firefox on iPhone and then reload it and boom no login cookie, refresh and it's there....wtf. But Safari can be swiped away, reloaded and still logged in.