TMS320F28P650DK: the phase-shift function of the EPWM module will cause abnormal wave.

Part Number: TMS320F28P650DK

Tool/software:

Hi, Experts

I encountered a problem when using the phase-shift function of the EPWM module on the C2000 chip. The configuration is as follows: UP MODE is used, the Duty of EPWM and EPWMB is 50%, and there is an additional 120ns dead time. When the value of the phase-shift register is changed, if the value of the phase-shift register is such that TBPHS > CMPA, the comparison event is skipped, resulting in a full duty cycle for one period, and the subsequent waveforms will return to normal. Can this problem be solved? The description picture is as follows: