This is the last client Nemo is able to restore the login window on. Starting with the 2017-06-21aRagexeRE and newer the login screen can no longer be enabled. Some other things were found to be added/changed that are related to this. So there won't be any more client releases until a solution is found.
As usual with any new client, don't expect it to work right away until support is done for it unless you just want to tinker with it.