trap touchstart touchend events within container

select2.js

@@ -777,7 +777,7 @@ the specific language governing permissions and limitations under the Apache Lic
             // for mouse events outside of itself so it can close itself. since the dropdown is now outside the select2's
             // dom it will trigger the popup close, which is not what we want
             // focusin can cause focus wars between modals and select2 since the dropdown is outside the modal.
-            this.dropdown.on("click mouseup mousedown focusin", function (e) { e.stopPropagation(); });
+            this.dropdown.on("click mouseup mousedown touchstart touchend focusin", function (e) { e.stopPropagation(); });
 
             this.nextSearchTerm = undefined;