When inserting page numbers I adjusted it to number not from 1 byt from 8.
On the last 7 pages there is no page number displayed only page number field 
with dot.
It seems, that if you shift numbering, it finishes numbering, not on the end of 
document, but stops numbering when reaching number of pages in documnet. I also 
changed shift number and still the same behavior.
When I entered new page after, page numbering was ending page later.