ksysguard question about "root, -1"

Hallo,
I need a little impulsion help about “ksysguard” task.
What does it mean when “root, -1” in the “username” column appear.
No further detail or descriptions in the rows about this ending task, only
"root, -1"appears so as to vanish into thin air.

I can´t found any answeres about this appearance and i hope someone can help.

Updated Screenshot about “root, -1”