Login flow has become less seamless
Before, you would look at a page, e.g. a translation workflow, notice you need to be logged in to perform an action, hit the login link, fill in your details, hit the button, be redirected to the page you were at before but logged in.
Now, after you hit the button, you are not redirected anymore. Instead you land on a page that says that “You are already logged in as username”.