title: GridLayout and number of rows and columns
body: <p>Does GridLayout ever not honor the number of rows and columns you've specified if you don't fill it completely?</p>
  
  <p>I'm creating a GridLayout with 3 rows and 4 columns.  However, I'm only adding 9 components.  It ends up showing me these 9 components in a 3x3 grid, rather than a 3x4 grid (with only 1 component on the third row (and two blanks)).</p>