I had an earlier Razer blade (a generation earlier then my current model) and it was horrible with palm rejection. That being said, I can say easily that this isn't a new problem. Maybe some software/driver update will clear that up.Trackpads are mistakenly registering input due to poor palm rejection
For me, I rarely use my laptops with the trackpad, Mouse only so as long as I can adjust the sensitivity or do something so the trackpad doesn't interfere I'll be happy.