Frameless window on MacOS has visible shadow
When I use in QML Window flag Qt.FramelessWindowHint or Qt.SplashScreen, I get frameless window but the shadow of the original frame is still visible. It happens only on Mac.
- on OSX 10.11 it happens only occasionally
- on MacOS Sierra it happens all the time.
The frame shadow appears randomly (sometimes only on one of several windows, sometimes on both) and usually disappears when the window is moved or resized.
Anyone has solution?