affecting the product editing page

Hello,

Thank you for getting in touch with us.

You can reduce the number of columns shown in the list by unchecking some of the not-so-necessary column in the screen options:

Optionally, you can add the following CSS modification code in your theme function.php to fix the issue.

add_action('admin_head', 'add_admin_css');
function add_admin_css() {
echo '<style>
  .post-type-product div.wrap {overflow-x:scroll; width:98%;}
  .post-type-product table.wp-list-table.fixed{table-layout:auto;}
  .post-type-product table.wp-list-table th#title{min-width:350px;}
  .post-type-product table.wp-list-table th#categories{min-width:150px;}
  </style>';
}

Hope that helps and please do not hesitate to let us know if you need our assistance with anything else.