Floor the searchWidth calculation due to inconsistencies between fractional pixel handling in different browsers

select2.js

@@ -2618,7 +2618,7 @@ the specific language governing permissions and limitations under the Apache Lic
               searchWidth = minimumWidth;
             }
 
-            this.search.width(searchWidth);
+            this.search.width(Math.floor(searchWidth));
         },
 
         // multi