XCB: Drag and drop doesn't work properly with multiple X11 Screens / XCB Virtual Desktops

Lest have two graphics cards and one output for every device (primary and secondary).
Bug1: open the window on secondary screen and start dragging - the shaped pixmap window appears on primary screen (instead of secondary screen).
Bug2: try to drag something into another screen - the drag and drop will lock (lack of grab after recreating shaped pixmap window).