Well, time to buy glasses... Thank you!
I have one more problem then..
It is somehow connected to the battery pad with slot-hole offset, maybe you can also find some solution, as I can't..
I am sure that the problem is caused by this pad, because when I move the component out of pcb, then the plane is poured completely fine.
Please, look at it.
And when I change poly type from solid to hatched more magic appears (second screen).