Change the default tab on a product

See the “Re-ordering Tabs” snippet here:
https://docs.woocommerce.com/document/editing-product-data-tabs/

The snippet goes in functions.php for your child theme.

I haven’t tested it but it may not work if one of the tabs is not set, so best to check a tab exists before setting its priority:

if ( isset( $tabs['reviews'] ) ) {
  // set priority as per example code
}
// other tabs similar

Thanks – much appriciated (Y)