to clarify I am using the EN6347QA not the EN6347QI version.
The QA data sheet from "10318 November, 27 2019 Rev J" :
"Power OK is an open drain transistor used for power system state indication. POK is logic high when VOUT is within ±10% of VOUT nominal and has an internal 100kΩ pull-up resistance to AVIN."
So from what i see in my design using the QA version there are no internal pull-up at all and the datasheet is misleading as the "internal 100kΩ pull-up resistance to AVIN" is wrong and the datashees should say clearly that POK reqiures an external pull up resistor.
We are really sorry for that POK misleading datasheet information, it happened during the datasheet converting to new Intel format.
So POK is an open drain circuit and it doesn't have any internal pull up resistor.
Did you shared your schematic with Intel's FAE for reviewed before?