This is the user name used internally by mysql for binlog handling (even
though it's not present in the mysql.user table).
The space in the name makes the plugin freak out about an unknown
"system" value.
Number of connections for this interal user is irrelevant.
Fixed the display issue for formerly active users that wore no longer showing once they closed all connections.
Also made other fixes like the negative others and improved performance.
It could still be improved but for now it should do.
i did this because I can't figure out how to *not* stack the lines
after the areas. furthermore, removing the limit is essential to have
a proper resolution in the display.
