Fvh highlighter problem with inverted proximity search

Elastic Stack Elasticsearch
1

Hi, I use Elasticsearch 7.9.3, I configured 2 text fileds, one of them is for exact search.
Mapping:

    "text_html": {
      "type": "text",
      "term_vector": "with_positions_offsets",
      "store": true,
      "analyzer": "text_minimal",
      "search_analyzer": "search_text_minimal",
      "fields": {
        "exact": {
          "type": "text",
          "term_vector": "with_positions_offsets",
          "analyzer": "text_exact"
        }
      }
    }

When I run the query with query_string and with a proximity, no highlighting in the result list.

{
  "highlight": {
    "fields": {
      "text": {
        "number_of_fragments": 0,
        "matched_fields": [
          "text_html",
          "text_html.exact"
        ],
        "type": "fvh"
      }
    }
  },
  "_source": ["text_html"],
  "query": {
    "bool": {
      "must": [
        {
          "query_string": {
            "query": "\"term1 term2 term3\"~10",
            "fields": ["text_html"],
            "default_operator": "and",
            "auto_generate_synonyms_phrase_query": false
          }
        }
      ]
    }
  }
}

In the original document, theses terms are presented as:
term3 term1 term2
When I put term3 term1 term2 in the query, I get the highlighting with terms.

How to solve the hightlighting problem with fvh? Is it corrected in a newer version?

I find a similar question:

But in my case I should use fvh to highliter several fields in the same text.

2

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