Radio buttons and checkboxes don't render properly on Mac with QWebView

Repro steps:

• download the latest stable installer at the time of creating this ticket: qt-opensource-mac-x64-clang-5.5.1.dmg from the website (althrough I could obverse the same behavior with Qt 5.4.2)
• start Qt creator after installation
• open the fancybrowser example and run it (the one using QWebView)
• go to this address: http://www.w3schools.com/html/tryit.asp?filename=tryhtml_radio (or any link pointing to a page with radio buttons or checkboxes)
• the radio buttons do not appear where they are supposed to (see attachement issue.png)

I was using QWebView with Qt 4 and had not problem with it and QWebView from Qt 4/5 on Windows works just fine. The problem seems to be Mac specific.

I tried using QWebEngineView on Mac instead of QWebView and it fixes the issue. Running the fancybrowser example which uses QWebEngineView does work as well (see attachement expected.png).

I added the compilation output to this ticket if that helps.

Here are some information about my system:
Operating system
OSX Yosemite
Version 10.10.5
Non-retina 13" screen

Compiler
Apple LLVM version 6.1.0 (clang-602.0.53) (based on LLVM 3.6.0svn)
Target: x86_64-apple-darwin14.5.0
Thread model: posix