Could you please share the snapshot of schematic?
What is the supply voltage at Vdd?
Do you see this issue with all your boards?
Could you please perform a system diagnostics test and post your results? The System Diagnostics status is also updated in the register map so that the host can read the test results through the I 2C interface. Refer to the CY8CMBR3xxx Registers TRM for more details.
More information on system diagnostics can be found in MBR3 capsense design guide and MBR3 datasheet
Design guide: https://www.cypress.com/file/46366/download
MBR3 datasheet : https://www.cypress.com/file/46236/download
MBR3 register trm : https://www.cypress.com/file/127221/download