web inspector will freeze when debug javascript

I've upgrade PySide from 1.1.1 to 1.1.2 in windows. I found the web inspector in the new version can't debug the javascript code in QWebView. When run to the breakpoint, inspector will freeze and the run, step, stop button can't click. 1.1.1 has no this problem.

Attachment is a test file, please click "scripts" -> "enable debugging" in the inspector, right click the browser select "reload" to reload the page, then add a breakpoint in "myFunction" fuction, when click the button on page, the inspector will freeze, and can't click run button.