In the results returned by the Search module concerning an indexed file in the
Uploads module, the "urltxt" variable receives the file name stead of the file
title / summary.
For example: "2016_02_workshop_annex_3.pdf" instead of "Annex 3 : Relevance of
bioaccessibility"

To fix this, it seems necessary to modify the SearchResult function in
Uploads.module.php
Line 528, replace:
$result[1] = $details['upload_name'];
by :
$result[1] = $details['upload_summary'];

Thanks