This is not a bug in lightdm itself, but rather accountsservice. For users to be able to log in without a password, they need to be added to the nopasswdlogin group. Once that is done, lightdm works fine.
This is not a bug in lightdm itself, but rather accountsservice. For users to be able to log in without a password, they need to be added to the nopasswdlogin group. Once that is done, lightdm works fine.