Crashes Repeatedly and Removed from Panel

OS: Debian GNU/Linux 10 (buster) x86_64
xfce4-panel version: 4.12.2-1
plugin version: 0.5.1-1

Everything was installed from the Debian repositories. The plugin crashes when I click on it, or sometimes just randomly.

I'm not sure it makes any difference, but here is some additional info about my desktop settings.
DE: Xfce
WM: Xfwm4
WM Theme: Default
Theme: Adwaita-dark [GTK2], Adwaita [GTK3]
Icons: Tango [GTK2], Adwaita [GTK3]