To assist you in the best possible manner, I kindly ask that you please provide me temporary wp-admin info (wp-admin URL, username, password) to the Private Content area, this will allow me to thoroughly investigate and address your concerns more efficiently.
That’s not a problem, that’s just how it works. Since sorting by title does not take into account the value after 1 if the value in the next product is 2 and there is no possibility because the SQL sorting algorithm does not support this.
This is a WordPress functionality and we cannot influence it.