Incorrect ad size in the GMA SDK + Rendering API integration scenario

[YuriyVelichkoPI]

Motivation

The issue described in the slack channel:

Ads don’t stretch to full width. As soon as we turn on the Prebid SDK, the ads appear smaller (like the one on the right in the images below). When we switch to only serving ads from Google, they scale properly in both width and height. Additionally, to the list of valid sizes, we are also sending GADInlineAdaptiveBannerAdSizeWithWidthAndMaxHeight.

Additional information: the way that the publisher uses to set the ad sizes:

defaultAdSize(source: source),
        CGSize(width: 250, height: 250),
        CGSize(width: 300, height: 100),
        CGSize(width: 300, height: 250),
        CGSize(width: 320, height: 50),
        CGSize(width: 320, height: 160),
        CGSize(width: 320, height: 320)

let adSize = GADInlineAdaptiveBannerAdSizeWithWidthAndMaxHeight(boundingWidth, defaultAdSize.height)
      validAdSizes.append(NSValueFromGADAdSize(adSize)) (edited)

Objectives

• Figure out the reason for the incorrect display and fix it.
• Make sure that all sizes are passed to the GAM properly.

There is an additional question that we should encounter in the scope of this ticket:

We’ve also noticed that the number of advertisers drops significantly when Prebid is on, and all ads seem to come through as smaller formats. When we turn off Prebid, there’s much more variety in advertisers, and ad sizes go back to normal.

It can happen due to the corrupted request info.