Fuzzy (edit distance) with 2 not getting results intermediately

We have 8 text fields (*_txt_en) in schema and one multi valued text field which is copy field of other text fields, like below.

tittle_txt_en, configuration_summary_txt_en, all_text_txt_ens (multi value field)

Observed one issue with Fuzzy match, same term with distance of two(~2) is working on individual fields but not returning any results from multi valued field.

Term we used is "prob" and document has "problem" term in two text fields, so all_text field has two occurrences of 'problem" terms.

title_txt_en:probl~2. (given results)

all_text_txt_ens:probl~2 (no results)

is there any other factors involved in distance calculation other than Damerau-Levenshtein Distance algoritham?

what might be the reason same input with same distance worked with one field and failed with other field in same collection?

is there a way we can get actual distance solr calculated w.r.t specific document and specific field ?

Thanks in advance !!

-Pradeep