Not unless the Raw Request window works differently than it does in the licensed version of SoapUI, which does show the JSON in the Raw Request window. Are you saying it's the norm in the non-licensed version not to display the JSON in the Raw Request window? Regardless, the problem is that when it doesn't show up in the Raw Request window, I get an error referencing the JSON. {"error": "Content-Type header missing (use Content-Type: application/json)"}

Since the Content-Type header is not missing I have to assume the error is not referencing that directly.
When the JSON does show up in the Raw Request Window(in the licensed version) the request does not create an error.
I have to assume that the lack of the JSON in the request (which, aside from a failed request is the only difference from the licensed version) is the cause of the issue.