I may be missing something but it appears that both the pixel and fractional values for moving the grid in the Grid node don't actually move the grid the proper amount. I wanted my grid to be more centered as opposed to centered at the top corner, but trying to offset it by half the cell size doesn't move it anywhere near where it would be expected.

(also this is on steam beta 1.19.7.1)

For comparison I made a 26x26 square and offset it by -13 to show the difference: