BQ51050B: Not charging again, when first cycle of charging is done

Hi,
I got paired  BQ500212A (transmitter) and BQ51050B (charger receiver) boards based on reference designs.
Both boards are working great when charging.

Problem I got is described below:
When charging cycle is done,  the charging process is stopped and Li-Ion battery on receiver side, then the battery is normally discharging.
The problem is, that battery is never going back to recharge, although both transmitter and reveicer coils have not being moved since charging process.

Is this a normal behaviour?
If not, how can i check on what side (transmitter or receiver) the problem is caused?

Thank you in advance.