searching on fields requires an ‘exact match’ by default.
Anki is only able to search within formatting in the sort field you’ve configured. For example, if you add “ exa mple” to one of your fields, this will not be matched when searching for “example” unless that field is the sort field. If a word is not formatted, or the formatting does not change in the middle of the word, then Anki will be able to find it in any field.
I searched for a fix around the web and i discovered this addon Search in formatted text in any fields - AnkiWeb that seems to fix the problem (but i still have to test it more).
Would it be possible to integrate this fix as a native solution? I don’t mind installing the addon and forgetting about it, but more addons means more possible incompatibilities, more problems to fix if an addon break with a new anki update, etc.
That change will mean notes consume more disk space, and I’m not ready to commit to that until I’ve had a chance to investigate full text searching in more detail.