Condition resource fails when using a custom representation of codedOrNonCoded

Using the Condition endpoint, I was hitting errors when trying to hit the Condition endpoint with a custom representation like this:

custom:(uuid,display,clinicalStatus,onsetDate,endDate,additionalDetail,condition:(coded:(id,uuid)))

Throwing this into a unit test, I was able to reproduce the error. Investigating, it seems that when the CodedOrFreeTextConverter is invoked, it simply tries to get a representation of each individual property of the ConditionOrFreeText instance, using the same representation of (coded:(id,uuid)). Since the specificName property doesn't match these fields, it fails.

I'm not entirely sure how this all was originally designed to work in the framework, which has a lot of abstractions and inheritance, but this seems like a bug.