About xfce4-whiskermenu-plugin

I see that for Ubuntu 18.04+ you used the GTK3-based version of the Whisker menu. This add-on does not look good in the GTK2-based panel. There is a big difference in the appearance of the GTK2 and GTK3-based items. If you can, drop into the repositories and the GTK2-based version of the Whisker menu under a different name. For example: xfce4-whiskermenu-plugin-gtk2. I myself use my own package extracted from package for Debian Stretch and this GTK2-based menu works great in the GTK2-based xfce4-panel for Ubuntu 18.04.