Native QFileDialog does not block file drop events

QFileDialog uses native Windows by default. The Windows File dialog does not correctly catch and block drop events. This leads to a modal QFileDialog not preventing drops from occuring below the dialog (through the dialog). This is an issue in Qt Creator as well.

The screenshots show the issue in action. It shows how a dragged file can be dropped on "non-droppable" areas of the file dialog. The drop is accepted and handled by the window "behind" the modal dialog. In this example, Qt Creator will open the dropped file, while the dialog stays open (and does not interfere with the drop in any way).

The second screenshot marks the areas which handle file drops as expected (windows file handling)[blue], and the areas where it unexpectedly ignores potential and final file drops with the window/widget "behind" handling it [red].

Using the QFileDialog::DontUseNativeDialog fixes this issue by using a different dialog.

This may very well be a Windows dialog issue, so I am not sure if this can be fixed in Qt. Nontheless, it is unexpected, confusing, and kind of defeats the "modality" of the dialog (although I recognize I can still drop files outside of the modal dialog and they will be handled).