(I\'ve looked at many other similar posts on SO and have unfortunately not been able to solve this problem, so here goes...)
I\'m using Selenium WebDriver (C# implementa
Is your site publicly available for test? Is your IE zoom level at 100%? It is a requirement for native click events to work from the documentation here
The browser zoom level must be set to 100% so that the native mouse events can be set to the correct coordinates.
If this doesn't work then it seems a bug in webdriver. You should open an issue here.
Having said this, you could probably go the Java script route in the meanwhile as a temporary solution. Something like,
driver.navigate().to("javascript:document.getElementById('yoursubmitbutton').click()");