Problem saving Quattro Pro x8 spreadsheet ad .pdf file

I am using ( Quattro Pro x8 and Windows 10.  When I tried to save my most recent spreadsheet (only has 35 rows; so 1 sheet), it saved.  But when I opened it in Adobe Reader CD Version 19, the spreadsheet sheet actually twice (repeated the entire sheet or 35 rows twice, like a page 1 & 2 of same thing).  Why?  What happened?  Never done this before.  Any help appreciated.