Worked all fine for me, apart from initially when logging in the screen didn't change but had logged me in still.
Now, after updating my password manager, its all set up to sign me in no matter the page I'm on. Bfc, ticket or the seasiders sign on pages. Shop is also logged in too already when signed in.
They sign you in through seasiders sign on page, but for the password manager I had to update the password for the bfc page login in the corner as that's a different page and had my old password still saved.
So no issue at all, just had to update the password.
One issue I have seen is I tried the video player and it played fine but the buttons for putting it full screen or pausing it etc didn't appear, they disappeared below quickly and you cant get it back.
I will try again, but am sure they'll sort that.
All in all good to just log in easily with 1 password, although mine came up automatically anyway.