Big Memory Leak in webenginewidgets/markdowneditor example

Installed the official Qt distribution:

qt-opensource-windows-x86-msvc2013_64-5.7.0.exe

In my Windows 10 (64-bit) box, I just cd into:

C:\Qt\Qt5.7.0\Examples\Qt-5.7\webenginewidgets\markdowneditor

Then execute:

qmake -tp vc

Open the generated project in Visual Studio 2013, compile and run (no modifications). The example works but eats up memory every time the window is resized (see attached screen).