2016.10 > PRV "Snap to" not working on older projects

Hi there,
In projects started in a version previous to 2016.10 "Snap To" in PRV is not snapping to 1/8th or 1/16th but trying to snap to one of the tripplet designations inbetween.
Can anyone confirm or not confirm?
Does anyone have a fix other than "eyeballing" it to the correct grid line?
It doesn't happen on a new project ... only projects started previous to 2016.10.

Thanks!