It seems not a CapSense sensor auto-reset feature.
I think this problem might come from CapSense IDAC auto-calibration function or CapSense start function call in FW side. Or IC(PSoC) reset condition (XRES, POR, etc.) in HW side.
To verify this problem, please attach the project file.
Oh I always thought it was the auto-reset.
Now I notice the code has no watch dog reset inside the for loop.
This solves my problem right away, thanks for your help