It seems most solderless breadboards don't have the connection points on the power rails aligned to the rest of the connection points.
Some just omit every 6th; on some the gap isn't even a multiple of 0.1 inches so some points don't line up at all.
I think for some usual applications it would be convenient if the power rails were aligned to the rest of the board. For example, to connect one side of a DIP-switch or bar graph LED to one of the rails all at once.
Is there a practical reason for this misalignment?