Modified by in Shop Order even when printing

Good afternoon,

We would like to understand why the “Modified By” field in the Shop Order is changed when we simply print the Shop Order, considering there is no change to the shop order itself.
The only change is in the Order History where there is a new line for “Shop Order Report Created”, but nothing is done at the Shop Order level itself.

Thanks in advance for your input.

Kind Regards,
Carlos Mendes