BuildPipeline.BuildPlayer with Facebook/WebGL failing to Initialize UnityIAP

I am having some problems building a Facebook WebGL product with UnityIAP. If I make my builds through the Build window and Facebook set to WebGL everything works fine. However, if I make my build using BuildPlayer and options set to Target=WebGL and Group=Facebook nothing works.

Am I doing something wrong? Or is this just broken?

InvalidOperationException: No impl available!
UnityPurchasing.Initialize(this, configurationBuilder);

@KJoanette

Sorry for the delayed response.

We are experiencing this issue as well. We are discussing this with the Facebook platform team and I’ll post an update here when I have more information.

Has there been any advance on this problem? Is there a bug that relates to it that I can upvote?