title: DFP not render true winner
body: <p><img src="https://i.stack.imgur.com/OiwIn.png" alt="prebid1">
  <img src="https://i.stack.imgur.com/EcUmp.png" alt="prebid2">
  I am new in DFP and Header bidding. I ready setup complete Header bidding with DFP now, but i have a problem: DFP not render true ads</p>
  
  <p>From image prebid1, I can seen Criteo and RTBHouse is bidder response, and Criteo is choose, but in below RTBHouse is render.</p>
  
  <p>From image prebid2, I can seen RTBHouse line item is choose.</p>
  
  <p>I hope someone can help me, or any sugguest tool for me check what happen. I use prebid 2.20.0</p>
  
  <p>Thank you very much</p>