Ah. You mentioned LP which is Lamination PRO and I looked and saw that it is not showing in metrics so I assumed that is what you were referring to.
Segment PRO does not show fractions and this is for a very good reason. In a very short period, all monitors will be touch enabled and this means that to use Segment PRO with a stylus, I have to use numeric Up/Down controls that can be used with a stylus or finger control. To accommodate high resolution monitors, I've doubled the size of controls to make this possible. The Up/Down arrows allow the value in the field to be incremented by a default amount which works great. They do not allow text values, though, and fractions are text values.
If you install any new app from the Apple or Windows store, you'll find no fields that support fractions. Like-it-or-not, we are moving towards metrics and it cannot get here fast enough. You don't have to make that leap, though, as we may settle on decimal inches. You can get tape measures and digital calipers with fractions/decimal inches now so the transition will be far simpler than when we tried to make the switch years ago.
Once you switch to decimal inches, you'll wonder why you didn't do it long ago.