Request unlock but we don't have any windows!

Hi there! For some reason when the screensaver locks my Chromebook the, screen remain frozen with exactely the same picture before the screensaver locks in. In this case I started the screen-saver in terminal, locked the session and used the poke parameter to act like a wake up attempt.

$ xfce4-screensaver --debug --display=:0.0
[gs_debug_init] gs-debug.c:115 (10:43:29.988):	 Debugging enabled
[main] xfce4-screensaver.c:95 (10:43:29.988):	 Initializing xfce4-screensaver 4.16.0
[init_session_id] gs-listener-dbus.c:2192 (10:43:29.998):	 Got session-id: /org/freedesktop/login1/session/_34
[gs_listener_init] gs-listener-dbus.c:2218 (10:43:29.998):	 Acquiring logind sleep inhibitor lock
[gs_listener_x11_set_timeouts] gs-listener-x11.c:322 (10:43:30.006):	 Saver timeout updated to 300 seconds
[gs_listener_x11_acquire] gs-listener-x11.c:298 (10:43:30.041):	 ScreenSaver Registered
[gs_grab_grab_root] gs-grab-x11.c:347 (10:43:38.647):	 Grabbing the root window
[gs_grab_get] gs-grab-x11.c:104 (10:43:38.649):	 Grabbing devices for window=50E
[gs_grab_get] gs-grab-x11.c:104 (10:43:38.750):	 Grabbing devices for window=50E
[gs_grab_get] gs-grab-x11.c:104 (10:43:38.851):	 Grabbing devices for window=50E
[gs_manager_create_windows_for_display] gs-manager.c:1177 (10:43:38.851):	 Creating 1 windows for display :0.0
[add_overlays] gs-manager.c:1015 (10:43:38.851):	 Reconfiguring monitors, adding overlays
[gs_listener_send_signal_active_changed] gs-listener-dbus.c:224 (10:43:38.851):	 Sending the ActiveChanged(TRUE) signal on the session bus
[remove_overlays] gs-manager.c:1046 (10:43:40.696):	 Done reconfiguring monitors, removing overlays
[xroot_filter] gs-listener-x11.c:261 (10:48:08.644):	 ScreenSaver timer reset
[gs_manager_request_unlock] gs-manager.c:1332 (10:48:48.014):	 Request unlock but we don't have any windows

Temporarly I'm using the fbdev kernel driver for now, I assume there might be some problem. Please let me know if other logs are needed. I'm using an up to date Arch Linux with XFCE 4.16.0.