QDropEvent still be passed to QAbstractItemView even when it's already accepted

I have a subclass which inherits QListView.

I accepted the QDropEvent in overrided dropEvent() function, and then I invoked QListView::dropEvent(). the event will not be  handled in Qt 5.11, but in 5.15, the event is handled by QAbstractItemView and the dropMimeData() function is invoked in my listview's model, which is  not correct I think.

the picture above is the result of drop a file into the listview, although the event is accepted but the dropMimeData is still invoked.