Currently, if you open a ticket and use the option at the top right of the screen to filter out "Internal notes" by selecting "Public messages," it will only filter on the screen.
If you proceed to use the Print option and print to .pdf you will receive all the Public messages and the Internal notes, which is counterintuitive.
Having this option would make it much easier for support agents who might have to do a review of several tickets with a customer over video conference. Please consider changing the printed version to match with's being viewed on the screen, or creating a print option for the ticket that would be considered customer-friendly by only including Public messages, and customer-viewable ticket fields.
For future reference, I want to point you in the direction of our product feedback template which has been designed by community members and PM's to help users provide as detailed feedback as possible so that our teams can understand and highlight the most important aspects of your product feature request. There is no need for you to update your post now, it will still be reviewed by PM's as is, but I did want to make sure you were aware for the next time you post!
For others who may be interested in this feature request, please show your support by upvoting the post or adding your specific use case in the comments. Thank you again for taking the time to provide us with your feedback!