Battery jumps 8-10% after charging is stopped.

When I charge my Instinct 2 Solar, after unplugging the charger, battery jumps by around 10% than when the charger was connected.

So if I unplug at 56, immediately after disconnect it shows 64, at 84 jumps to 92, stopped at 91 shows 100% . In normal usage after this, these 8-10 % drain a little faster, but in general there is no battery drain.

It is a normal behavior? (I still have 3-4 days to return the watch)