NSView embed in QWidget covers other sibling widgets, why?

[pengxu]

int main(int argc, char *argv[])
{    
    QApplication a(argc, argv);
    
    QWidget* mw = new QWidget();
    mw->setFixedSize(800, 600);    
    
    QWidget* canvas = new QWidget(mw);
    canvas->setGeometry(0, 0, 800, 600);
    canvas->setStyleSheet("background-color:red");

    NSView* remote = [[NSView alloc] initWithFrame:CGRectMake(0, 0, 1, 1)];
    [remote setWantsLayer:true];
    remote.layer.backgroundColor = [NSColor yellowColor].CGColor;
    NSView* cv = reinterpret_cast<NSView*>(canvas->winId());
    [cv addSubview:remote];
    [remote setTranslatesAutoresizingMaskIntoConstraints:NO];
    [remote.bottomAnchor constraintEqualToAnchor:cv.bottomAnchor constant:0.0f].active = YES;
    [remote.leadingAnchor constraintEqualToAnchor:cv.leadingAnchor constant:50.0f].active = YES;
    [remote.widthAnchor constraintEqualToAnchor:cv.widthAnchor multiplier:1.0f constant:0.0f].active = YES;
    [remote.heightAnchor constraintEqualToAnchor:cv.heightAnchor multiplier:1.0f constant:0.0f].active = YES;
 
    
    QWidget* tool = new QWidget(mw);
    tool->setGeometry(0, 400, 800, 600);
    tool->setStyleSheet("background-color:green");
    
    mw->show();
    return a.exec();
}

why the yellow remote nsview (which is in the red canvas) alwas covers the green tool widget (which is on top of red canvas)

mac os 10.13.6

[SGaist]

Hi,

Which version of Qt are you using ?

[pengxu]

This post is deleted!

[pengxu]

@SGaist
5.14.2, I also tried 5.15.2, but still the same on mac os 10.13

[pengxu]

@SGaist can you help me? Thanks very much!