nov 28 20:15:58 thinkpad gnome-shell[1790]: Window manager warning: last_user_time (1606590957) is greater than comparison timestamp (10320355).  This most likely represents a buggy client sending inaccurate timestamps in messages such as _NET_ACTIVE_WINDOW.  Trying to work around...

nov 28 20:15:58 thinkpad gnome-shell[1790]: Window manager warning: W148 appears to be one of the offending windows with a timestamp of 1606590957.  Working around...