The GPIO pins when configured as input will not be pulled high or low. Note that the input pins should not be left unconnected as mentioned in the datasheet. Please have a pull up of recommended value on the GPIO pins when configured as input.
Thanks for the clarification. However, I found some info in KBA85921:
It says: "CY7C65213 inputs have an internal 5.6-kΩ pull-up resistor to VCCIO."
So it seems that the CY7C65213 and Cy7C65215 do handle IOs different, This difference was a bit surprising to me.
We will add the recommended pull ups.