Two pane AJAX submit does not work
When we submit a form opened in two-pane, you can see JS error in JS console complaining about illegal invocation of append method on object that does not implement FormData interface. Since the JS fails, normal form submit continues and reloads the whole page. We have to turn off data processing.
#2 Updated by Marek Hulán about 4 years ago
More information can be found at http://stackoverflow.com/questions/6974684/how-to-send-formdata-objects-with-ajax-requests-in-jquery and http://api.jquery.com/jquery.ajax/