Qt draw combined emoji incorrect on Mac

Emoji like these below:

👩🏻‍🤝‍👩🏼      👩🏽‍❤️‍👨🏻

code:

QImage img(100, 100);

QPainter painter(&image);

QFont font("Apple Color Emoji");

font.setPixelSize(16);

painter.setFont(font);

painter.drawText(img.rect(), Qt::AlignCenter, "👩🏽‍❤️‍👨🏻")

//or 

//painter.drawText(img.rect(), Qt::AlignCenter, "👩🏻‍🤝‍👩🏼 ")

correct display (in mac own APP)

incorrect display(draw by QPainter)

a large space will exist between emoji component.