When I visit the Stack Overflow homepage, and I'm not logged in, there is a big button for logging in with Google. When I click it, I'd expect to be left on the current page I'm on (https://stackoverflow.com, in this case), but instead it takes me to my Developer Story page.
Is this by design? It always surprises me a little because there isn't much wording on the home page to suggest that clicking the "Google" button is going to take me to my Developer Story.