Up to 3.8 sending an empty patron search in the patron module would return all patrons. That is no longer the case and a regression to older versions of Koha. I found it working in 3.8, but broken in 3.10 and master. To test: - Go to the patron module - Change nothing and send the patron search on top Problem: Instead of a list of all patrons a 'no results found' message is shown.
Problem confirmed in 3.10. Not critical but clearly a regression.
No activity on this for a few years and it's possible to retrieve all patrons by searching for '%' - closing this report.