Login to a different Account doesn't work as it should

Hi,

does anyone else have the problem that if, for example, account A was the last one logged in and I wake up the MacBook and want to log in with account B, I am still logged in to account A?

I can thus gain access to account A with the password of account B.

I'm running Sequoia 15.1 on a MBP Late 13.
I have also noticed this behavior with Sonoma.