REG 5.5->5.6/Windows: Frameless and translucent widget is not rendered when device pixel ratio != 1 on secondary monitor

Requirements: device pixel ratio for monitors should be more than 1.0 by either using 4K monitor or by forcing it with qputenv("QT_SCALE_FACTOR", QByteArray("2"));

Can be easily reproduced when a widget’s geometry is set on non-primary monitor:

QWidget mainWindget(nullptr, Qt::FramelessWindowHint);
mainWindget.setAttribute(Qt::WA_TranslucentBackground);
QPushButton button(&mainWindget);
button.setText("Sample Test");
//mainWindget.setGeometry(100, 100, 100, 100); // primary monitor
mainWindget.setGeometry(2000, 100, 100, 100); // second monitor
mainWindget.show();

Works fine if placed on primary monitor or when either of FramelessWindowHint or TranslucentBackground flags are not used.