Rich Snippets Shows Out Of Stock

Merchant centre is showing some products cant be shown as stock says out of stock.

Only happens on some products but I dont track inventory in my store.

When I looked i can see that it is only products that are set to zero in stock but I dont track inventory so having it to zero shouldn't matter should it

https://www.hivis.co.uk/hi-vis-yellow-bomber-jacket.html

https://prnt.sc/5MlFQaTLBLou

https://prnt.sc/p4Wsj9zajvsF

https://prnt.sc/dPqqFe-9ZLKd
https://prnt.sc/OFmcdti0gaM_

4.15.1.SP4

Please move this thread to the Bug tracker branch