facebook debugger tools does not scrape correct data - facebook

Question

around a year ago I make a php script to echo the description and title and image to be loaded in meta tag.
I also used facebook og:image, og:description in meta property and it works. there used to be some problems but I just need to copy paste the URL into facebook debugger, click debug and scrape again and it is fixed.
now those steps does not fixes my issue, I have checked the echoed description and image from Chrome's view-source and it returns the correct strings
the problem is when I copy paste the URL into debugger, the RAW data, one of it is correct while the other is not, and the OG properties that constructed is even worse.
this is the view-source from chrome
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta http-equiv='Content-Type' content='text/html; charset=UTF-8'>
<meta property="og:description" content=" Dapatkan kesempatan menjadi dealer/reseller mesin fotocopy kami dengan harga yang murah terjangkau">
<meta property="og:image" content="http://images.rajafotocopy.com/raja.png">
this is the RAW data from facebook
<meta name="viewport" content="width=device-width, initial-scale=1" />
<meta property="og:description" content=" PT.Buana Citra Abadi Sewa mesin fotocopy & Jual Mesin Fotocopy new/rekondisi murah import hub : 0815 7813 8888" />
<meta property="og:image" content="http://images.rajafotocopy.com/raja.png" />
<meta name="webcrawlers" content="all" />
<meta name="rating" content="general" />
<meta name="spiders" content="all" />
this is the constructed OG properties
og:description PT.Buana Citra Abadi Sewa mesin fotocopy & Jual Mesin Fotocopy new/rekondisi murah import hub : 0815 7813 8888
og:image http://headers.rajafotocopy.com/cibo.png
now please look at og:description and og:image, in view source the og:description and og:image shows the correct strings.
but in RAW data only the og:image is correct.
and in constructed og properties both are wrong.
From this question I think it is because of the code 206, the partial content loaded. so how do I force facebook to scrape fully, not partially? the link to that forum cannot be reached anymore. from this answer it says code 206 it shouldn't be a problem?