When viewing as user “Anyone”, Glide always “knows” that no one is “signed in” (see the Sign in/Sign up buttons), but the logged in email address most often just stays as the last logged in user (see the email address circled)
This mode should always be available to test not-logged in users in the builder (you cannot log someone out when testing as a different user)
Is the only way to test the logged-in status to look for an empty email address? Because that’s not working.