I am logged into multiple accounts on Gmail. I had a bad habit for a number of years where I'd switch email addresses and forward all my mail from the previous one.
The problem is, when I try and log into a different site through Google oAuth, then the first Gmail account I logged into automatically gets selected.
Let me explain with an example. On Stack Overflow I have accounts for email1 and email2. Only the email1 account is used and it is linked to a Gmail account which I don't actually use anymore. If I logged into email2 first, then I will not get the option to select the correct account for Stack Overflow. I need to log out of all accounts in Gmail which is tedious.