Dogs, and especially puppies who feel secure, tend to wander at home but be much more attentive afield. I took my pup for her first offleash wilderness experience at 5 months on a 3 mile hike through the woods. She'd never been in the woods, so she had to check out everything. But within that, she kept me in sight...mostly. And came running back for a touch frequently. Once she did disappear for a probably a full minute, though to me it seemed like an eternity and was in a near panic, but she did come back and we continued on. She's now 8 months old, and has many many more hikes under her metaphorical belt, and I feel like I can trust her more to do the right thing. If you have a good bond with the pup, and she's attached to you generally, I'd tend to take her wandering signs positively. She's young and confident and bold. All good qualities!
So take her our of her home environment sometime and gauge her actions there. If she's still wandering and not keyed in on you, you may have an issue you'll need to somehow deal with. But her wandering at home just means she's comfortable, confident, and ready to explore.
It's not the size of the dog in the fight, it's the size of the fight in the dog. Mark Twain