Traceback when drag and drop icons on random layout

[humitos]

Steps to reproduce it:

1. Go to Random Layout by clicking
2. Start dragging some icons over others
3. After a drag leave the cursor over an icon

Issue:

Traceback (most recent call last):
  File "/home/humitos/sugar-build/install/lib/python2.7/site-packages/sugar3/graphics/palettewindow.py", line 559, in _mouse_slow_cb
    self._palette_do_popup()
  File "/home/humitos/sugar-build/install/lib/python2.7/site-packages/sugar3/graphics/palettewindow.py", line 574, in _palette_do_popup
    self.popup(immediate=immediate)
  File "/home/humitos/sugar-build/install/lib/python2.7/site-packages/sugar3/graphics/palette.py", line 206, in popup
    PaletteWindow.popup(self, immediate)
  File "/home/humitos/sugar-build/install/lib/python2.7/site-packages/sugar3/graphics/palettewindow.py", line 620, in popup
    self._widget.set_transient_for(self._invoker.get_toplevel())
  File "/home/humitos/sugar-build/install/lib64/python2.7/site-packages/gi/types.py", line 47, in function
    return info.invoke(*args, **kwargs)
TypeError: argument parent: Expected Gtk.Window, but got jarabe.desktop.favoritesview.ActivityIcon

Expected behaviour:

Do not raise a TypeError.

Environment:

sugar-build F17

[godiard]

The traceback is not visible in Sugar 0.102