WebView asserts when double click a link

very easy to reproduce:

import QtQuick 2.0
import QtWebKit 3.0
WebView {
	id: webview
	url: "http://www.bing.com"
	width: 800; height: 600
}

When page is loaded, double click a link, the program crashes. Other urls produce the same result.
Output the following error:

SHOULD NEVER BE REACHED
UIProcess\qt\QtWebPageEventHandler.cpp(509) : WebKit::QtWebPageEventHandler::handleInputEvent
1 042AD355
2 0428709C
3 0428959E
4 01606726
5 01621582
6 0161E671
7 0161E823
8 005BE32F
9 0161E04E
10 650528CE
11 6505030A
12 672B74C4
13 673C7198
14 005B013F
15 005AF6D2
16 00598541
17 005984C9
18 1003AFF4
19 6733FB07
20 77D18734
21 77D18816
22 77D189CD
23 77D18A10
24 67340BF3
25 1003AF5E
26 672B40C1
27 672B421E
28 672B79FD
29 005AF468
30 6504FFB9
31 00402B26
First-chance exception at 0x042ad35a in xxxx.exe: 0xC0000005: Access violation writing location 0xbbadbeef.
Unhandled exception at 0x042ad35a in xxxx.exe: 0xC0000005: Access violation writing location 0xbbadbeef.