.NET6 / OData 8 not serializing OData responses properly

I originally opened this issue in the WebApi repo (not realizing there's this new repo specifically for .NET Core).. The full details of the issue can be found here:

https://github.com/OData/WebApi/issues/2602

But basically I am seeing this error in .NET 6 (where everything was fine in .NET 5):

I guess the guy who was going to look into it got busy, so I decided to look into this further myself by debugging with your source code.. and I've discovered that this issue happens when one of the properties is an object[]. In my case:

public object[] KeyValues
{
	get { return new object[] { Id }; }
}

There seems to be an error happening in Microsoft.AspNetCore.OData.Formatter.Serialization.CreateStructuralPropertyBag() for that one property. No error message thrown.. it just breaks right where it was silently and I get a broken JSON response.

Hoping this now helps you guys find and fix the issue.