Li-Ion charger IC leakage current confusion
Yes and no. That is the quiescent current when there is no power supply. Page 7 of the datasheet says 5uA max when Vbus exists (charge terminated, charger still connected to power). 85uA (58uA typical) is when there is no power to the charger.

58uA drain on a fully charged 2000mAh battery would deplete it to 20% in 27586 hours, or 3 years.... to put this in context.

And yes, it is in addition to the battery self drain.