Maybe this is normal but I just caught it on my piaware. My piaware can track a plane from many miles away but until the plane is about the land, does it show up on flightaware and not only that it is a very short flight.
EDIT: I started to put some of it together. It seems that maybe something is decoding the flight wrong or the website is not putting them together
My piaware sees it as flight 4752 but fligthaware gets confused with Republic 4752
flightaware.com/live/flight/475 … 0510/0147Z
flightaware.com/live/flight/N44 … /KDCA/KJAX