Comment 2 for bug 896375

We have this problem too. Our users typically do not have a home directory until the first time they log in, by the way, with the use of pam_mkhomedir.so to create it, however this behavior is independent of whether the home directory exists or not.

We do not see the session chooser widget until you click on a *different* user than the default; then it shows up, for all users.