[iOS 10] Text font weight broken

on iOS 10 bold text is rendered as normal style.

Steps to reproduce the issue:
1. Deploy attached test application to iOS 10 target

Expected:
Text is rendered as bold style

Actual:
Text is rendered as normal style

Text {
    id: name
    font.bold: true
    text: qsTr("bold")
}

Notes:
This works fine on iOS 9
Same issue occurs also with NativeRendering being set