I have checked – and an ajax call is being made as you would expect as follows:
REQUEST HEADERS
Cache-Control no-cache, must-revalidate, max-age=0
Connection Keep-Alive
Content-Type text/html; charset=UTF-8
Date Fri, 13 Mar 2015 17:25:58 GMT
Expires Wed, 11 Jan 1984 05:00:00 GMT
Keep-Alive timeout=2, max=200
Pragma no-cache
Server Apache
Transfer-Encoding chunked
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN, SAMEORIGIN
X-Powered-By PHP/5.5.22
X-Robots-Tag noindex
RESPONSE HEADERS
Accept application/json, text/javascript, */*; q=0.01
Accept-Encoding gzip, deflate
Accept-Language en-GB,en;q=0.7,en-US;q=0.3
Content-Length 17
Content-Type application/x-www-form-urlencoded; charset=UTF-8
Cookie ame-show-extra-icons=1; pdtr_hide_banner_on_plugin_page=true; broken-link-css-wrap=1; geeky_option=1; wordpress_fd8b28572fdadeb16c327dcf102b915a=itmanager%7C1430751046%7CryBQfd6LfyyQr0MKPYvuROm5PzUHOa96E6lqZyLWKUH%7C99b49d6ddc8b86a47d146f8d80ea46fdd95928aac1306cd0e2be67421c029138; wp-settings-1=hidetb%3D1%26dfw_width%3D822%26editor%3Dtinymce%26libraryContent%3Dbrowse%26posts_list_mode%3Dlist%26post_dfw%3Doff%26wplink%3D1%26align%3Dleft%26urlbutton%3Dfile%26imgsize%3Dthumbnail%26advImgDetails%3Dshow%26mfold%3Do%26editor_expand%3Don; wp-settings-time-1=1426248441; toplevel_page_shortcodes-ultimate_last_tab=0; cookie_notice_accepted=true; wordpress_logged_in_fd8b28572fdadeb16c327dcf102b915a=itmanager%7C1430751046%7CryBQfd6LfyyQr0MKPYvuROm5PzUHOa96E6lqZyLWKUH%7Cf87b446c469210691ab6698b97a07d57bd1c284fad05a55d4c379e4a091b0e80; rghash=a76d8db8-806c-3e95-f579-6b054a76e48; PHPSESSID=70be07f5f5b8ee55b65a6b28be1a51b0; wordpress_test_cookie=WP+Cookie+check; apb_active=false
DNT 1
Host https://www.eastdevonalliance.org.uk
Referer https://www.eastdevonalliance.org.uk/wp-admin/plugins.php?plugin_status=upgrade
User-Agent Mozilla/5.0 (Windows NT 6.3; WOW64; rv:36.0) Gecko/20100101 Firefox/36.0
X-Requested-With XMLHttpRequest
POST
action=hideRating
RESPONSE
[“success”]
So aside from my expecting the call to be to a php file which is from this particular plugin, it seems to be working at the browser.
Hope this helps.