OLED display Interference with second I2C bus

I am using the CE version of the WIFi Kit esp32. I have a second I2C bus which communicates with four devices. The original WiFi board works well. However the CE version causes the OLED display to dim as soon as the ‘wire1.begin(SDA,SCL)’ is run. There is also a significant ‘flash’ of the display when the I2C bus is active. An updated circuit diagram for the CE version would possibly help to understand this issue.
Thanks, Ian.