Fixed rows containing merged cells don't print correctly -- portions of the row are unshaded. For example, drop an advstringgrid on a form and add "advstringgrid1.MergeCells(2,0,2,1);" to the form's oncreate handler and add a button and code to preview or print the grid using default settings. The printed grid will have an unshaded cell in the second-to-the-last cell in the fixed row.
We have detected & fixed a regression with respect to merged cell printing.
We can confirm this will be addressed in the next update.