TheTVdb scraper "In Progress TV shows"

In my TV collection I have >250 series and if I select "In Progress TV shows" I get a very short list.

Correctly identified:

• Breaking Bad
• Endeavour
• The Americans
• Vikings
  

Series that should not be in this list:

• Edward & Mrs. Simpson
• The Wire
• The Virgin Queen
• Sir Francis Drake
• That '70s Show
• Some Mothers do 'ave 'em
  

Missing from the list are at least:

• Dexter
• The Good Wife
• Ice Cream Girls
• Bomb Girls
• Homeland
• Game of Thrones
• Covert Affairs
• Californication
• Flikken Maastricht
  

I have checked most of the data in thetvdb.com and they are correct there.
Am I missing something or is this feature flawed?