Why did you remove the centered option in the window in place of Top and Left positions in 9.0.0?! The programmer will now have to manually figure out the top/left corner location based on the browser size and the size of the window. I have 20+ of your window controls and all of them are skewed out of the browser window when I set them to 50%, 50%. This makes centering of a window a completely manual process and VERY difficult.