Comment 5 for bug 1888049

Indeed, the gnome-integration plugin was not installed, These integrations seem to be left out of the meta package of the distro and you must download them manually for your desktop.

However, this unfortunately does not apply to Xfce. Installing 'cairo-dock-xfce-Integration-plug-In' on Xfce yields the same results: 'Empty or unreadable Folder' and Bin applet doesn't open the trash folder, "xdg-open trash://" works. But you also mentioned that Thunar is not supported by default? Or should it be when using Xfce-Integration plugin?

I have attached the log from using cairo-dock on LM 19.1 Xfce.

Thank you for your patience and for solving the problem on Cinnamon. Apologies for the bug report since regarding Cinnamon it's not a bug, just a missing plugin.