If you submit a patron name to the checkout form it will trigger a JavaScript error in the console because there is JS embedded in an include, circ-patron-search-results.inc. This JS should be moved so that it is included in the footer.
Created attachment 71694 [details] [review] Bug 20221 - Fix for JavaScript error during checkout patron search This patch fixes a bug caused by the changes in Bug 19641. JavaScript embedded in circ-patron-search-results.inc executes before jQuery is loaded. This patch adds a separate javascript file which can be included both in circulation.tt and request.tt since both use the same include. To test, apply the patch and submit a patron name in the check out form. On the page of search results, clicking a table row should work the same as clicking the patron name link. Perform the same test during the hold process: Locate and place a hold on a title. In the patron search form, submit a patron name and test the behavior of the search results screen.
Pushed to master, thanks Owen!