When serializing a page's QWebHistory into a QDataStream and deserializing it into a new QWebPage, POST data gets corrupted.

An example project is available at https://github.com/OtterBrowser/test-qtwebkit - when visiting e.g. http://httpbin.org/forms/post and entering "test" as customer name, the data looks right:

  "form": {
    "comments": "", 
    "custemail": "", 
    "custname": "test", 
    "custtel": "", 
    "delivery": ""
  }, 

However after clicking clone, the sent data is corrupted:

  "form": {
    "\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001": ""
  }, 

I confirmed via Wireshark this is what's actually sent out.

It doesn't happen when doing the same with QtWebEngine, but I still consider that too immature/incomplete to switch to it, at least until Qt 5.6 (but probably longer).

I also attached a minimal PyQt example.