WebBrowser Control

I am using the WebBrowser Control and am running into problems with some web sites. I had to put the control into IE 11 emulation mode for the web sites that I visit. I notice that the auto complete doesn't work when I use the WebBrowser Control, but if I hit the web site with a normal web browser the functionality works fine. Is there a option for the WebBrowser Control to allow this functionality?

I am using the WebBrowser Control to log into web sites without the users knowing/sharing the password.