I'm developing a Wordpress-Plugin where I add some forms to the wordpress admin. Usually when I'm testing the processing of form data, I fill in the form once and then just reload the page to send the same form data again and again for testing. When I reload the page after submitting a form with post-data, the browser pops a dialog "Confirm Form Resubmission" and if I confirm it sends the same post-data again.
But for some reason I don't get this dialog any more and the page is just being reloaded without the post-data being sent.
Has somebody an idea about the reason for this changed behaviour? It works just as usual when I test it with a from outside wordpress. I've also tested with multiple browsers and they all gave me the same result. So I guess it might be a change inside Wordpress?