The full option is setting the height to 100%. This means the full option is context dependant - and can behave slightly differently depending on the structure of the page.
If the container is inside something else, setting the height to full will make it take up the entire height of it’s parent component.
If the container is at the root of the page, or inside a component without a specific height, setting height to full would mean the height of the container is only big as the content inside of it.