String Grid V6.3.0.0

I've just updated to version and no find the a majority of my string grids are missing the column titles, and the 1st row of the grid is now blank. If I click on the cell, the text is visible, when I move off, the text disappears.

There has been no changes to my source code which relates to the string grids which are effected.
Is this problem widespread - If so how is it fixed ????