Just installed the QVC app. It just seems to be the way it is. Not anything you've done. The main QVC channel is shown without the product details sidebar where's Beauty & Style have the sidebar.
It looks like the QVC main channel video stream is being taken before they add in the product id, whereas they're streaming the other channels' live outputs. Weird.
Maybe because main channel is live they can re-use the recordings later and change details on new sidebar overlay on re-broadcast and the item details are always shown live below the video in the app??? Click the item to see its product ID and details.