Commented Unassigned: Gridview buttons don't fire with htmleditorextender on the same page (IE 11) [27621]

I created a simple page with a gridview that has a button field. I also added a textbox/hemleditorextender. Buttons do not fire postback in IE 11. Seems ok in previous version of IE.
Comments: Same using FormView, if I only enter text and simple functions like Bold it works. But if i make a new line or use other functions the post pack on the form the buttons do not fire postpack. If I use compability mode in IE 11 everything works.