Autocomplete: Always reset this.term after a select event, even if the select is cancelled. Fixes #6221 - Autocomplete: Doesn't reset after Select when textbox cleared, if same letters typed in rapidly; source function not triggered in that case.

ui/jquery.ui.autocomplete.js

@@ -181,9 +181,11 @@ $.widget( "ui.autocomplete", {
 					}
 
 					if ( false !== self._trigger( "select", event, { item: item } ) ) {
-						self.term = item.value;
 						self.element.val( item.value );
 					}
+					// reset the term after the select event
+					// this allows custom select handling to work properly
+					self.term = self.element.val();
 
 					self.close( event );
 					self.selectedItem = item;