We’ve recently upgraded our application to Unity 5.6 and are having issues displaying banner ads on Android devices.
The logs are saying that an ad is being fetched without issue, filled with both house ads we’ve set up and marketplace ads, and these banners are even clickable in the application while being invisible. When you first show the banner you can briefly see it for a couple of frames, and when it refreshes you can see it for a couple of frames. But the rest of the time the ad is completely invisible.
Working no problem on Unity 5.5 and on Unity 5.6 on iOS devices.
We’re also having this issue with the mopub sample application. We cannot see banner ads on Android at all, but we can click on them as if they are there.