When searching by 3 fields - field 1, field 2 and field 3, it ignores field 1 and highlights only fields 2 and 3.

Would you be able to share a small reproducible gist (like this: https://gist.github.com/kishorenc/b2d8a01644dd78a815dbae7882ed74c5) with a sample collection schema, single document and the search query that show cases this problem?