


I stopped using it and went back to my 2012 MBP. I had the same problem with the MAC from Sept. I know there's a dust issue with some keyboard people have had but this is more for typing and not a jumpy trackpad. Tell them to type on it until it happens to sounds like a bad trackpad to me, make sure they address the cables to and from the trackpad/keyboard too and not just the trackpad and keyboard themselves. demand they replace or fix it again, especially if it's under applecare warranty.

THESE options are more for older macs as yours is basically brand new. If none of the above, you could open it and check the connection and make sure there's no corrosion or any moisture related anything on the plug in where the trackpad has it's connectors but if it's new and no liquid damage has ever occurred then this is prob not a cause but possible if it's even got wet too. Some can be adjusted VERY little but just enough (search here for this) But yes, it can be one of several y these first.they're the easiest. Could be several things, reset the PRAM.also check the cycles on the battery under system information/power if it's REALLY high like near 1000 it could be a bloated battery which pushes up on the trackpad and keyboard and causes this.also check the adjustment screw for the trackpad.
