Having an application that listens to dragover and drop events on a specific type of files, open any type of dialog (filechooser, directorychooser, or custom modal dialog) making sure to set the primarystage as ownerWindow of the dialog. While having the dialog open, drag a accepted type of file to the drop area of the main app window

Expected result: Do nothing. DragOver or drop events should not be accepted. From FileChooser API definition, showOpenDialog: "If the owner window for the file dialog is set, input to all windows in the dialog's owner chain is blocked while the file dialog is being shown. "

Actual result: App responds to the DragOver and Drop events.