#34 Drag preview does not show in heavyweight support

[kkaa]

If I modify the following lines in DockingWindowExample, the drag preview rectangle only shows for a brief minute and then is no longer visible. Shouldn't the preview show until the drag event is complete?

original code:
rootWindow = DockingUtil.createRootWindow(viewMap, handler, true);

Change to:
rootWindow = DockingUtil.createHeavyweightSupportedRootWindow(viewMap, handler, true);

I am using version 1.6.1