Updated.

modules/ask/_ask_widget_form.html.erb

@@ -41,6 +41,9 @@
     .ask-question .form-horizontal input[type="text"],.ask-question  .form-horizontal select{
       width: 97%;
     }
+    .ask-question .form-horizontal input[type="text"].hasDatepicker{
+      width: auto;
+    }
     .ask-question .form-horizontal .form-actions{
       position: relative;
       padding: 1em 0 0 0;