ASP.NET AJAX Toolkit Combobox need to press enter twice to postback

im using a ComboBox for a feature in my application, and i have AutoCo开发者_高级运维mpleteMode="Suggest".

However, after i type the in the textbox for a search, and press Enter, nothing happens, i need to press Enter again to postback and show some results. Its kinda annoying and not intuitive to press Enter twice.

Its really weird, because when i go for debug mode i just need to press once...

Anyone have a clue why this is happening?

Thanks in advance

The first Enter must be accepting the suggestion in the combo box, and the second Enter is pressing the Submit button on the page, possibly?

That's exactly what is happening on the sample page for the control, here: http://www.asp.net/AJAX/AjaxControlToolkit/Samples/ComboBox/ComboBox.aspx