QScreen::devicePixelRatio() returns the wrong value on multiple display with HiDPI

Here is a pseudo code to reproduce the pb on Windows 10, first screen at 150%, second at 100%

for( int i = 0; i < qApp->screens().size(); i++ ) {
   std::cout << "Screen factor: " << qApp->screens().at( i )->devicePixelRatio() << std::endl; 
}

The result here is: 

Screen factor: 1.5
Screen factor: 1.5

And it should gives 1.5, 1