Github user solomax commented on a diff in the pull request: https://github.com/apache/wicket/pull/256#discussion_r161435444 --- Diff: wicket-core/src/main/java/org/apache/wicket/ajax/res/js/wicket-ajax-jquery.js --- @@ -643,11 +643,6 @@ we.publish(topic.AJAX_CALL_PRECONDITION, attrs); - if (attrs.mp) { // multipart form. jQuery.ajax() doesn't help here ... --- End diff -- This is noted in bug description here: https://issues.apache.org/jira/browse/WICKET-6517
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