Hello, I barely upgraded my neon desktop to the new plasma 5.8.

My computer is joined to an ActiveDirectory domain. The default SDDM breeze theme continues to show a huge list of users at the login screen, although there is a "different user" button to arbitrary user from domain.

The other problem: I create a "test" user in domain with "expired password" status. When I try to do the login, the SDDM screen always restarts. In my syslog shows:

Oct 4 13:24:46 ...hostname... sddm-greeter[3275]: Reading from "/usr/share/xsessions/plasma.desktop"
Oct 4 13:24:46 ...hostname... sddm[1023]: Message received from greeter: Login
Oct 4 13:24:46 ...hostname... sddm[1023]: Reading from "/usr/share/xsessions/plasma.desktop"
Oct 4 13:24:46 ...hostname... sddm[1023]: Session "/usr/share/xsessions/plasma.desktop" selected, command: "/usr/bin/startkde"
Oct 4 13:24:46 ...hostname... sddm-helper[3307]: [PAM] Starting...
Oct 4 13:24:46 ...hostname... sddm-helper[3307]: [PAM] Authenticating...
Oct 4 13:24:46 ...hostname... sddm-helper[3307]: [PAM] Preparing to converse...
Oct 4 13:24:46 ...hostname... sddm-helper[3307]: [PAM] Conversation with 1 messages
Oct 4 13:24:46 ...hostname... sddm-helper[3307]: [PAM] Preparing to converse...
Oct 4 13:24:46 ...hostname... sddm-helper[3307]: [PAM] Conversation with 3 messages
Oct 4 13:24:46 ...hostname... sddm[1023]: Authentication information: "Password expired. You must change it now."
Oct 4 13:24:46 ...hostname... kernel: [ 785.032356] traps: sddm-helper[3307] trap stack segment ip:42c743 sp:7ffd256b9b40 error:0 in sddm-helper[400000+37000]
Oct 4 13:24:47 ...hostname... sddm[1023]: Authentication error: "Process crashed"
Oct 4 13:24:47 ...hostname... sddm[1023]: Auth: sddm-helper crashed (exit code 7)
Oct 4 13:24:47 ...hostname... sddm[1023]: Authentication error: "Process crashed"
Oct 4 13:24:47 ...hostname... sddm[1023]: Auth: sddm-helper exited with 7
Oct 4 13:24:47 ...hostname... sddm[1023]: Greeter stopping...
Oct 4 13:24:47 ...hostname... sddm[1023]: Socket server stopping...
Oct 4 13:24:47 ...hostname... sddm[1023]: Socket server stopped.
Oct 4 13:24:47 ...hostname... sddm[1023]: Display server stopping...
Oct 4 13:24:47 ...hostname... sddm-greeter[3275]: The X11 connection broke (error 1). Did the X11 server die?
Oct 4 13:24:47 ...hostname... sddm-helper[3265]: [PAM] Ended.
Oct 4 13:24:47 ...hostname... systemd[1]: Stopping Session 4 of user sddm.
Oct 4 13:24:47 ...hostname... systemd[1]: Stopped Session 4 of user sddm.
Oct 4 13:24:47 ...hostname... systemd[1]: Stopping User Manager for UID 118...
Oct 4 13:24:47 ...hostname... systemd[3268]: Reached target Shutdown.
Oct 4 13:24:47 ...hostname... systemd[3268]: Starting Exit the Session...
Oct 4 13:24:47 ...hostname... systemd[3268]: Stopped target Default.
Oct 4 13:24:47 ...hostname... systemd[3268]: Stopped target Basic System.
Oct 4 13:24:47 ...hostname... systemd[3268]: Stopped target Timers.
Oct 4 13:24:47 ...hostname... systemd[3268]: Stopped target Paths.
Oct 4 13:24:47 ...hostname... systemd[3268]: Stopped target Sockets.
Oct 4 13:24:47 ...hostname... systemd[3268]: Received SIGRTMIN+24 from PID 3311 (kill).
Oct 4 13:24:47 ...hostname... systemd[1]: Stopped User Manager for UID 118.
Oct 4 13:24:47 ...hostname... systemd[1]: Removed slice User Slice of sddm.
Oct 4 13:24:47 ...hostname... sddm[1023]: Display server stopped.
Oct 4 13:24:47 ...hostname... sddm[1023]: Running display stop script "/usr/share/sddm/scripts/Xstop"
Oct 4 13:24:47 ...hostname... sddm[1023]: Removing display ":0" ...
Oct 4 13:24:47 ...hostname... sddm[1023]: Adding new display on vt 7 ...