Happened to me some time ago using Alby browser extension.
Just do this, copy/paste:

• when is presented the QR code to login, instead of click on the QR, copy the LNURL auth code.
• open Alby and paste it. Done, you will login.

I suggest to always have a nostr alternative login. Cost you nothing to open a nostr pubkey, just for SN, if you do not have one already.

You can use nostr login with Alby extension too and with nos2x extension or any other secure way for your nsec.