Hi,
I’m getting the same issue. When I try to login, a new tab opens and I login with my test internet identity. It then closes the tab and comes back to the tab that I started on, but then nothing: I am not authenticated and all I get is this warning log
WARNING: expected origin 'http://a3shf-5eaaa-aaaaa-qaafa-cai.localhost:4943', got 'http://localhost:3000' (ignoring)
N.B: http://a3shf-5eaaa-aaaaa-qaafa-cai.localhost:4943 is the frontend of my internet identity canister, whereas http://localhost:3000 is the frontend canister of my app.
@richards Can I ask how you solved your issue ? (my code looks very much like yours)
@kpeacock it’s coming from this file that you wrote. Basically this warning is stopping the authentication request and I’m not sure what it’s trying to prevent 
Thanks!