Facet term values not being set

Summary: When executing a faceted search, the facet values aren't set

Repro:

1. Create FTS index on travel-sample (attached definition)
2. Execute faceted search (attached code sample)

Expected:

The facet values to be listed (e.g. "San Francisco", "London", etc for cities, and "United Kingdom", "United States" for countries).

Actual:

A collection of facet values is returned, but only the count is set, not the name. (See screenshot of debugger)

Notes: This does not appear to be an issue with the node.js SDK (see this blog post for an example of the node.js faceting working), which is why I'm assuming it's a bug in the .NET SDK.