Even when you force the report items to be aligned to the editor's grid, you may notice that changing the size of box does not snap, if the initial size of the box did not fit to the grid.
Select the box,
Make Same size,
Size to grid
Once the borders are snapped to grid, you can change the size according to the grid width.
(originally posted in OpenLAB Forum: https://zohodiscussions.com/openlabcdsforum#Topic/68030000000133001
2014 September 10 by Bernhard Etrich )