Hello, The problem is more «aesthetic» than real.
As icons are missing in the packages, but theme is still looking for them, XFCE soft-complaints about it (see attached image), which looks awful. Workaround or suggestions (mutually exclusive): 1. Adding required icons to the package. 2. Removing the theme code that looks for the icons. 3. After installing the package, run a hook to update the icons cache (gtk-update-icon-cache /usr/share/icons/elementaryXubuntu-dark/). Greetings, -- Camaleón
