In the Admin page for a single product, the variant section has multiple columns, making that area need to scroll right.
The person who worked on the site before me somehow set this up.
On another Shopify site I worked on for the past few years, the variant section did not look like this.
All I want to see in the area is the variant picture, SKU and Quantity. This was how I have always seen it and Shopify help did not understand.