When any string is entered in the Search Transactions field, the number of Transactions Found always shows the same number, 3,731, for me at the moment. I believe that may be the total count of transactions. This is true regardless of filter settings (except if I change the Since [year] dropdown to All Time, then the Transactions Found banner is no longer displayed).
This banner used to show the number of results that were located by the search.
Occurs in Version 6.4.3 on iPhone 15
Screenshot shows a search with a single result and the banner showing 3731 transactions found.
[edited image to reduce size]