Hi
On IE 11, the "AutoComplete" function for ComboBox dosn't work anymore (It works, but only in Compatibility Mode). First i thought, it is a problem in my Code.
But: Your Ajax Toolkit Website have the same Problem (See here: http://www.asp.net/ajaxLibrary/AjaxControlToolkitSampleSite/ComboBox/ComboBox.aspx)
When you run the Debugger Mode, the following error appear's:
In Compatibility Mode it Works, on Chrome it Works too