Search-as-you-type datatype + text array = not working

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1

I'm trying out the search_as_you_type datatype instead of implementing a custom analyser for autosuggestions. My old solution worked when searching a text-field such as:

'text' => [
	'type' => 'text',
	'fields' => [
		'suggest' => [
			'type' => 'text',
			'analyzer' => 'autosuggest',
			'search_analyzer' => 'standard',
		]
	]
]

Where a document could be:

{
	"_index": "someindex",
	"_type": "_doc",
	"_id": "1",
	"_source": {
		"text": [
			"some text",
			"other text"
		],
		"original_text": null,
		"status": "good"
	}
}

And the search query would a bool query containing:

bool: {
	must: [
		{
			multi_match: {
				query: "some",
				fields: ['text.suggest^2', 'original_text.suggest'],
				fuzziness: 'AUTO'
			}
		}
	],
	filter: [
		terms: {
			status: "good"
		}
	]
}

The text field can be either a string or an array of strings. When changing the text field mapping to:

'text' => [
	'type' => 'search_as_you_type'
]

... and the query to:

bool: {
	must: [
		{
			multi_match: {
				query: "some",
				fields: [
					'text^10',
					'text._index_prefix^2',
					'original_text',
					'original_text._index_prefix',
				],
				fuzziness: 'AUTO'
			}
		}
	],
	filter: [
		terms: {
			status: "good"
		}
	]
}

... i still get results where text is a single string, but documents where text is an array of strings don't show up. How come?

2

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