#3016, dont use delimiter key when not multiple with additions allowed

src/definitions/modules/dropdown.js

@@ -1161,7 +1161,7 @@ $.fn.dropdown = function(parameters) {
               if( module.is.visible() ) {
 
                 // enter (select or open sub-menu)
-                if(pressedKey == keys.enter || pressedKey == keys.delimiter) {
+                if(pressedKey == keys.enter) {
                   if(pressedKey == keys.enter && hasSelectedItem && hasSubMenu && !settings.allowCategorySelection) {
                     module.verbose('Pressed enter on unselectable category, opening sub menu');
                     pressedKey = keys.rightArrow;
@@ -1278,7 +1278,7 @@ $.fn.dropdown = function(parameters) {
               }
               else {
                 // delimiter key
-                if(pressedKey == keys.delimiter) {
+                if(pressedKey == keys.delimiter && settings.allowAdditions && module.is.multiple()) {
                   event.preventDefault();
                 }
                 // down arrow (open menu)