Created attachment 134219 [details] Simple Perl CGI script to demonstrate the problem The URL contains a sample form to demonstrate the issue. http://goh.id.au/~david/webkit.org/form-submit-new-tab/index.cgi Clicking "Submit" on the form does the expected thing, sending a form POST. Cmd-clicking "Submit" opens the form in a new tab, and sends a blank GET to the URL. The source code for the CGI is attached.
Jon, this seems familiar. Are you aware of other reports of the same?
*** This bug has been marked as a duplicate of bug 65111 ***
Thanks! :-)