Cooked builds changing case of JSON serialized property

I have run into and issue that only happens in cooked builds.

A USTRUCT has a JSON property named


When serialized to a string in a cooked build it comes out as


This causes case sensitivity mismatch when other libraries, such as a python JSON serializer and property lookup to fail. i.e.


results in a lookup error.

Looking at UE4s JSON serialization library I see nothing obvious as to what is causing this.


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