Merge branch 'MDL-63198-master' of git://github.com/rezaies/moodle

lib/amd/src/form-autocomplete.js

@@ -719,10 +719,13 @@ function($, log, str, templates, notification, LoadingIcon) {
                 // Get the current element with focus.
                 var focusElement = $(document.activeElement);
 
-                // Only close the menu if the input hasn't regained focus, and if the element still exists.
+                // Only close the menu if the input hasn't regained focus and if the element still exists,
+                // and regain focus if the scrollbar is clicked.
                 // Due to the half a second delay, it is possible that the input element no longer exist
                 // by the time this code is being executed.
-                if (focusElement.attr('id') != inputElement.attr('id') && $('#' + state.inputId).length) {
+                if (focusElement.is(document.getElementById(state.suggestionsId))) {
+                    inputElement.focus(); // Probably the scrollbar is clicked. Regain focus.
+                } else if (!focusElement.is(inputElement) && $(document.getElementById(state.inputId)).length) {
                     if (options.tags) {
                         pendingPromise.then(function() {
                             return createItem(options, state, originalSelect);