Unity Monetization 3.0 - Display (interstitial) ads do not execute the callback method

Just switched to Monetization 3.0 SDK and I'm getting reports from players that the static image ads (Display type), on close, will not resume the game. From the videos where this issue can be seen, I can guess that the ad does not execute the callback method which should resume the game.

Unfortunately, I am unable to test this on my own devices as there are no Display ads available for my region and using the "test" mode will simply show a test "video" ad.

This is the code that I'm using to show Display ads.

ShowAdCallbacks options = new ShowAdCallbacks();

options.finishCallback = UnityAdsCallback;

ShowAdPlacementContent ad = Monetization.GetPlacementContent("interstitial") as ShowAdPlacementContent;
if (ad != null)
{
ad.Show(options);
}
else
{
UnityAdsCallback(ShowResult.Failed);
}

Anyone having the same issue?

 

Do other ad types work, aside from display? - Yes
What version of Unity are you using? - 2018.2.13f1
Do you know the scripting backend you are using: IL2CPP

private static void UnityAdsCallback(ShowResult result)
{
switch (result)
{
case ShowResult.Finished:
EventManager.Instance.BroadcastEvent(onAdsProviderAdSuccess);
break;

case ShowResult.Skipped:
EventManager.Instance.BroadcastEvent(onAdsProviderAdSkipped);
break;

case ShowResult.Failed:
EventManager.Instance.BroadcastEvent(onAdsProviderAdFailed);
break;
}
}

 

I am facing a similar situation where my game does not resume after ad completes playing

 

Have you found any solution to this problem?
i'm facing the same problem and it is really annoying.
Is it a good solution to replace it with a "reward video", because that one does use the callbacks?