nothing's wrong, but see https://github.com/ajaxorg/pilot/commit/7a1651f87af08b0523e6c7cf034a1924ab3d48f3#lib/pilot/dom.js, https://github.com/ajaxorg/ace/commit/c93d1e209abdde0d97bb6d7fcf5567c5f4bcdd65#commitcomment-793749