Window dragdrop event not fired

Hi,

I have a xulrunner app. and want to open file by drag&drop from the file
explorer. This was working with 1.9.2 but it does not anymore using
XR14. I guess the HTML5 implementation is the rootcause, so I want now
to implement it in the new/right way... But until now I fail.

It seems that the "window" DOM element does not get the "dragdrop" event
trigger:
https://developer.mozilla.org/en-US/docs/DOM/window.ondragdrop

I have a xul window with those attributes:
ondragdrop="dump('ondragdrop\n')"
ondragleave="dump('ondragleave\n')"
ondragenter="dump('ondragenter\n')"
ondragover="dump('ondragover\n')"

All events are triggered by moving from my desktop a file to my
application window... except the "dragdrop" one. By releasing the mouse
left button, I get in place a "dragleave" event triggered.

Is that a bug or do I misunderstand something?

Regards
Emmanuel