"Disable Gyroflow's stretch" doesn't work

[CrazyLiu00]

My software is currently connecting to Gyroflow, but during the process, I found that 'Disable Gyroflow's stretch' is not working. I checked the code and found that it only called:
stab.disable_lens_stretch(self.anamorphic_adjust_size);

I tried to print the log and found that the values of 'lens.input_horizontal_stretch' were all 0。
Can you tell me which external parameters affect the variable 'Disable Gyroflow's stretch'? Thanks。