I upgraded my workstation and now in my panel's tasklist I do not see the icons of the applications. So basically a browser window looks the same as a terminal window in the tasklist.
Except for when I have two "Thunar" windows, there is a filemanger icon in the tasklist - when I close the second window I again have no icon. This is not consistent with applications, e.g. having two firefox windows does not bring me the icons of the firefox grouped windows in the tasklist. I have (again) deleted my whole ~/.config/xfce4 and this still persists. Also consulted https://docs.xfce.org/xfce/xfce4-panel/4.20/tasklist and created the ~/.config/gtk-3.0/gtk.css but this did not help. Any hints, or other users with this error?
Except for when I have two "Thunar" windows, there is a filemanger icon in the tasklist - when I close the second window I again have no icon. This is not consistent with applications, e.g. having two firefox windows does not bring me the icons of the firefox grouped windows in the tasklist. I have (again) deleted my whole ~/.config/xfce4 and this still persists. Also consulted https://docs.xfce.org/xfce/xfce4-panel/4.20/tasklist and created the ~/.config/gtk-3.0/gtk.css but this did not help. Any hints, or other users with this error?