I also have an issue with cost archive meta box on admin product page. When I edit a cost, the meta box “new cost” column only displays whole numbers and not decimals.
For example : When I edit a cost from 125,00 € to 125,65 €, meta box displays “previous cost” : 125.00 € “new cost”: 125.00 € instead of 125.65€.
But when I modify the cost as it was initially, from 125.65 € to 125.00 €, meta box displays “previous cost” 125,65 € “new cost” 125.00 €.
I don’t understand why the “new cost” column doesn’t take decimals into account while the “previous cost” column does.
This happens with every products…