For groups with Auto Layout, there's a new Overflow setting. It controls what happens when your content spills outside the container. You can set one of four values: Visible, Hidden, Scroll and Auto.
Visible Content extends beyond the container without being cropped. Useful for effects such as drop shadows.
Hidden Any content extending beyond the container edges is cropped. Ideal for trimming excess parts of an image.
Scroll A scrollbar is always visible, even when all content fits within the container. Useful for tiles, image galleries, etc.
Auto A scrollbar appears only when content exceeds the container. Use this if you plan to add more content and want to keep the layout compact.