I did additional tests and the dimensions displayed are right! Only the height is a little lower. I think it is simply because it the browser innerHeight.
I think the components are not displayed properly because the way the AsyncResize is triggered!
Normally onResize means that the windows is completely resized. But I think in this case its dimensions are not fully completed this is why the components get the wrong dimensions.
The solution may be to determine is the resize is fully completed before to set the positions of the components. For that it will be useful to know the parameters returned by *EventParams?
Does somebody know?
I think the components are not displayed properly because the way the AsyncResize is triggered!
Normally onResize means that the windows is completely resized. But I think in this case its dimensions are not fully completed this is why the components get the wrong dimensions.
The solution may be to determine is the resize is fully completed before to set the positions of the components. For that it will be useful to know the parameters returned by *EventParams?
Does somebody know?

