I've tried a couple of things to implement cell wrapping in an Ext.grid.cell.Cell but it seems to affect the layout of the grid rows in a bad way. See my fiddle that demonstrates this issue:

If you go to the TestGridPanel file you'll see that I've tried modifying the innerStyle of the cell configuration. This achieves the goal of wrapping the text but causes other problems. I've also tried using a renderer to do the same thing but it causes the same problems with the row heights.

Perhaps someone has found a different way of achieving this that doesn't alter the height of the grid rows.