Problem in Matlab example Motion-Based Multiple Object Tracking

Hello. I am running MATLAB example Motion-Based Multiple Object Tracking and analyzing Kalman filter parameters. I mentioned that in vision.kalmanFilter, Kalman filter parameters are not updated in each time step. I expected that state and state covariance to be updated in each time step after correcting the Kalman filter with measurements, but this does not happen in the code. I saved some samples of Kalman filter parameters of one track in different time steps and uploaded the images. you can see that states are the same in frames 50-51-52. Can anyone help me to see the updated Kalman filter parameters?