Created attachment 75144 [details] Marc data known to illustrate the problem. A keyword search for Gene Porter Stratton generates author links of the form {STAFF URL}/cgi-bin/koha/catalogue/search.pl?q=au:%22Stratton-Porter,%20Gene,%22 This link will return no results. If I replace the hyphen with %20 (i.e. a URL encoded space), the search works: {STAFF URL}/cgi-bin/koha/catalogue/search.pl?q=au:%22Stratton%20Porter,%20Gene,%22 To replicate: Do a keyword search for an author with a hyphenated name (I've attached a marc record that has Gene Porter-Stratton for convenience). On the results list page or the detail page, click on the link with the author's name, e.g. By: Stratton-Porter, Gene, 1863-1924. The results will look like this: No results found No results match your search for 'au:"Stratton-Porter, Gene,"' in Some Library Back up to the previous page. Copy the link url into a text editor. Change the dash to a hyphen. Note that the search succeeds.
This is almost certainly caused by the Zebra 2.0.59 bug. If it's not, feel free to re-open.