libxfce4ui - No branding with About Xfce 4.20 on Intel systems

openSUSE has provided Xfce 4.20 packages for their rolling release, Tumbleweed. After my systems were upgraded to the new packages, the About Xfce screen displayed the Tumbleweed branding on the two AMD systems (screenshot from one AMD system attached), but did not display the branding on the two Intel systems.

It was suggested on their Forum, to submit a bug report here.