i found a bug on window/dialog when it in a iframe
when i re-size one border(eg: South border) outsize the iframe and release the mouse, then back into the iframe, the window/dialog will not be drag-able again.
i tracked the code, found the 'window-proxy-mask' above the window
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Basic Window - jQuery EasyUI Demo</title>
</head>
<body>
<div style="width:500px;height:500px;background-color:red">
<iframe src="basic.html" frameborder="0" style="border: 0; width: 100%; height: 100%; display: block"></iframe>
</div>
</body>
</html>
note:the iframe src '
basic.html' is same as window demo 'basic.html'
