sts-standard-table-column

/**
* Filters the standard table column
* which was introduced in WP 4.3
* see https://make.wordpress.org/core/2015/08/08/list-table-changes-in-4-3/
*
* @since 1.0.6
*
* @param     (string)     $column     the columns ID
* @return     (string)     $column     the columns ID
*/

Filter the standard column for the ticket overview table. By defining this column, you define, which column shows up in the mobile version of the table. This column should appear right after the checkbox.