UCC28019A: UCC28019A's gate waveform looks like abnormal

Hi,

     I find UCC28019A's gate waveform seems abnormal.

     My design parameters as below:

     Vin=AC190V-265V (my test condition as AC230V), Vo=385V, Io=1.034A(total output power is 400W, and it is a motor)

     waveform as below:

     Ch1 is Gate waveform, Ch4 is input current.

     It looks like occur  in bridge rectifier's peak.

   Schematic as below:

   Schematic reference UCC28019A's datasheet Figure 26.

   now use parameters is blue.

   the red is program dealer's parameters,but there's gate waveform not abnormal.

   Is there any suggestion?

thanks.