[Bugs] #2570 UNSP: gdk window obscured events don't always happen (was: gdk window obscured events no longer happen)

[Sugar Labs Bugs]

#2570: gdk window obscured events don't always happen
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    Reporter:  dsd                        |          Owner:  erikos                     
        Type:  defect                     |         Status:  assigned                   
    Priority:  Unspecified by Maintainer  |      Milestone:  Unspecified by Release Team
   Component:  sugar                      |        Version:  0.92.x                     
    Severity:  Unspecified                |       Keywords:  11.3.0                     
Distribution:  Unspecified                |   Status_field:  Unconfirmed                
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Changes (by dsd):

  * version:  0.90.x => 0.92.x


Comment:

 OK, so I was being stupid all along. Confirmed. But there is still a
 regression here. Test case:

 Modify record as follows:

 {{{
 self.add_events(gtk.gdk.VISIBILITY_NOTIFY_MASK)
 self.connect("visibility-notify-event", self._visibility_changed)

     def _visibility_changed(self, widget, event):
         logging.warn("VISIBILITY %r", event.state)
 }}}

 Launch terminal

 Launch Record - it launches with UNOBSCURED visibility - great.

 Press F1 to change to neighborhood view. Record gets no event.

 Open frame, switch to Terminal activity. Record still gets no event.

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Ticket URL: <http://bugs.sugarlabs.org/ticket/2570#comment:9>
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