I have mx DataGrids with custom item renderers on one column based on HBox. I tried to optimize them using the spark MXDataGridItemRenderer class, but using it results in the first row of the column being 2px shorter than the rest, as if the first row got hidden under the grid header. From the second row onwards the height is ok, but the first row problem results in every row being shifted up 2px. When selected, it looks just bad.
Any ideas would be much appreciated.