In MySQL Workbench 6.1 (OS X), can you make the Result Grid taller?
You mean like this:


Place your mouse on the line between the grid toolbar and the editor bottom. It's only a few pixel so watch out. The cursor image should change to a split cursor and you can drag that line to resize both, editor and grid. On Mac the split cursor sometimes does not appear, but otherwise it still works moving the split position.