About windowmanager event I have some questions,please look at below contents:

1. For debugging onscreenapp I updated master recipes in 2019/1/20 and compiled,but when I debugging onscreenapp, I found that after calling deactivateWindow windowmanager wasn't working as expected, the log was in wm.log file.
2. About Event_ScreenUpdated application can receive this event when new application window showing,
   the json contents as below:

	{ "ids": [ "launcher" ] }

When I debuged onscreenapp and show onscreen window,I got Event_ScreenUpdated as below:

	{ "ids": [ "onscreenapp" ] }

Then I touch onscreen's button to hide onscreen,at this time I can't get Event_ScreenUpdated.
From upper logs,I understood that only when show application windowmanager will emit Event_ScreenUpdated.is it right?

IMHO,it's not enough for applications.Below was a humble view of mine,please comment on it.Thank you in advance.

• set all displaying application's id in Event_ScreenUpdated event who displaying on different layers.
• when on all layers displaying status changed,windowmanager will emit Event_ScreenUpdated event.