You can configure to justify, do not justify or hide the last row. Sometimes the last row stay very weird and out of the box, so configure as you want.
Last row justified
[name-shortcode id=”279″ height=”100px” fixed_height=”on” last_row=”justify”]
Last row is not justified
[name-shortcode id=”279″ height=”100px” fixed_height=”on” last_row=”nojustify”]
Hidden last row
[name-shortcode id=”279″ height=”100px” fixed_height=”on” last_row=”hide”]