After starting the tutorial within the UI editor, I maximized the screen (everyone looks fine), then un-maximized (to original size of editor window), and the tutorial window (shown in image below) was not visible, and couldn't figure out how to make it visible again.
Also, the preview window seemed to be sized with more percentage of the larger UI editor window that it should have been.
Just mentioning as I'm just beginning with the product, so thought I'd mention it.
After starting the tutorial within the UI editor, I maximized the screen (everyone looks fine), then un-maximized (to original size of editor window), and the tutorial window (shown in image below) was not visible, and couldn't figure out how to make it visible again. Also, the preview window seemed to be sized with more percentage of the larger UI editor window that it should have been. Just mentioning as I'm just beginning with the product, so thought I'd mention it.