http://bugs.winehq.org/show_bug.cgi?id=58372
--- Comment #2 from Bernhard Übelacker bernhardu@mailbox.org --- Currently in "0.#####E-#" the '#' is counted into the fractional digits. Therefore it appends again the fifth fractional digit '3'.
Submitted merge request which avoids this: https://gitlab.winehq.org/wine/wine/-/merge_requests/8339
With it the application shows now just "29,5653 m" without any exponential notation. If you build wine yourself, maybe you can give this patch a try.