title: Changing product thumbnail sizes in WooCommerce 3.3
body: <p>I'm having some issues changing product thumbnail/image sizes in WooCommerce 3.3.</p>
  
  <p>I used to be able to do this in Admin under WooCommerce > Settings > Products > Display. But I don't see the display tab anymore. </p>
  
  <p>Has this functionality been moved or is there any other way to change image sizes now? </p>