It was very annoying. Ajax request not works perfectly in IE. But when developer tool is opened ajax quires are works fine. It was very cumbersome . It happened because IE chache Ajax requests. When Developer tool opened it is always refresh from server.
I get this fixed by making cache false in ajax request.
$.ajax({ type: "GET", url: url, dataType: "html", contentType: "application/json; charset=utf-8", data: JSON.stringify({}), cache: false, success: function (r) { } });
I think it might help you.