Non stock items purchase GL Code is GRNI account - is this correct?

A client has non stock items set up with the Purchases GL Code as the Stock Clearing (GRNI account)

Stock items are set up with Purchases GL Clearing Code set up also as the Stock Clearing (GRNI account).

Non stock items are purchases for jobs or freight costs.

I thought this looked wrong but then was looking at the Demo Company on my local machine and I noticed the same set up.

I'm trying to understand what is causing a WIP imbalance and wondering if it is connected to this set up, especially if inwards goods receipts are currently being processed into the same GRNI account for both stock and non stock (including freight).