This is a forwarded bug:
when klibido is restored with the -session switch and
then closed with the alt+f4 shortcut, it does not
really quit but stay hidden in the background.
The consequence is that if klibido is restored and you
close it, and then decide to launch again klibido and
let it open when you close the session, there will be 2
instances of klibido that will restored on next
Just lauched "klibido -session blabla" and use "alt-f4"
show that klibido does not fully quit.