It won't let me log in

When I was on my realm, I got lost. So, I left it, and signed out and logged in to my second account to get the coordinates of spawn to help me find my way home. When I did that, I left the realm and signed out and three to log in to my main account. I tapped sign in but it opened my second account. I tapped sign in on a different account but it loaded and put that screen on again

 

How to reproduce:

1:go into the log in page and do the first option, not save to decide

2:log in with an alt/other account, not the current one you are using

3:after log in, reopen Minecraft

4:try logging in with the account you were on while doing step one

 

This was first discovered by me in 1.17.10