Responses API file_search_call 'queries' array empty in response.output_item.added event

While the AI is busy searching the vector store, I would like to show the user the search phrases that the AI has come up with similar to what ChatGPT sometimes does. The problem is that the search phrases are not delivered until the search is complete (response.output_item.done event), at which point the response stream starts right away. I don’t want to delay the response stream, and showing the search phrases after the response has started seems silly.

I see an empty ‘queries’ array in the following event which is received pretty quickly:

event: response.output_item.added
data: {“type”:“response.output_item.added”,“output_index”:0,“item”:{“type”:“file_search_call”,“id”:“fs_123456”,“status”:“in_progress”,“queries”:,“results”:null}}

I would really like to be able to grab the search phrases from this event. Seems like they should be there given the empty queries array and all. Is that a feature that will be coming to Responses API?

Any other way to retreieve the search phrases earlier in the flow?

Thanks!