On the whole this produces results similar to the original algorithm. However, there is a difference when using the NoIR camara. Using the default settings will sometimes result in purple images!
To compensate for this purple tinge, there is a new AWB mode. When using raspicam applications (e.g. raspistill) you can set this new mode using
We recommend this setting is used at all times when using the NoIR camera.raspistill -awb greyworld ....
Currently (17th July 2019), this change has not made it to the standard distribution although the firmware can be updated using rpi-update. and you can get the linux side code changes here https://github.com/raspberrypi/userland/pull/560. It should be installed as standard within a few weeks and I will update this thread when it is all available using the standard routes.
See this github thread for more technical information. https://github.com/raspberrypi/firmware/issues/1167