Multi_match unexpectedly changing which fields are returned

Using v6.3.1 I'm doing a multi_match query with a a filter and it's working, but not returning all the fields for the documents.

Here's the query:

GET /myindex/_doc/_search
  "from": 0,
  "size": 1,
  "query": {
    "bool": {
      "must": [
          "multi_match": {
            "query": "dress",
            "fields": [ "name" ]
      "filter": [
        { "term": { "shop.keyword": "a_6ojOupk0Y6ejlHfak0OGvj" } }

That correctly returns documents with a name containing "dress", but some of the fields are missing -- namely, an images field that contains an array of strings.

I'm able to get the images field in the result if I change the fields searched to be "fields": [ "name", "images" ] or remove multi_match entirely. Additionally -- other arrays of strings from the same document are returned without issue.

Did I miss something in the docs? Should a multi_match search be changing which fields are returned for a document?

Edit: I might be a dummy and didn't confirm it was the same document being returned.... ugh. Will report back after I do that...

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