TransformPattern.Resize is closing window upon resize

I am using the UIA TransformPattern.Resize pattern to resize a window. It works, but closes the window as soon as the resize shows. Is this intentional?

Here's the code that does the resize:

        internal static int Resize(AutomationElement control, double width, double height)
        {
            TransformPattern pat =
                (TransformPattern) CommonUIAPatternHelpers.CheckPatternSupport(TransformPattern.Pattern, control);
            if (pat.Current.CanResize)
            {
                pat.Resize(width, height);
                return 0;
            }
            return -1;
        }