If for the window set the parameter "hidden = false", the event "onShow" will not be called when the window starts first time.
But if you hide the window and show it again, the event will be triggered.
Window view is created hidden, so to make it visible you need to use show() method
Please check the sample: https://snippet.webix.com/vlsc3odo
Thanks for the answer, but the documentation has a special setting. And the event system is not working as expected.
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