Hello!

I am not sure what's going on, but xfce4-power-manager stopped
showing its icon in the systray (of my fbpanel).
The icon takes space in the systray and may be clicked (the context
menu pops up, with the display brightness slider, the presentation mode
checkbox and the settings... entry), but no icon is actually shown.

As a consequence, there's no visible feedback about the power status.

I am sure it used to work in the past, but I don't know when it
stopped working...

What could be the cause of this issue?

Thanks in advance for any help you may provide.