Placement of window/webpage in centre of editor

This requires the window/webpage to move when showing / hiding library or Inspector. While this works ok on OSX it causes horrible flickering on Windows. If the window/webpage were located in the top left corner this movement wouldn’t be necessary.

I think you’re trying to solve the wrong problem here…

You may be right. I was looking at Xojo working on my wife’s mac mini & it was so beautiful and comparing it to my windows 7 laptop. Back at my laptop it is horrible, but what I’m actually seeing is the inspector/library flicker several times then the window/webpage move. So much for that theory. I also must admit that I usually have either the inspector or the library visible so moving the window isn’t a problem.