Printing seems to change a document
When the only thing done is printing an InDesign document, the app acts if there were any changes made: when closing, it asks wheter to save the changes.
This is very confusing, since it makes the user think something was changed by accident. Please make InDesign close the document without the save dialog, if nothing was changed.
Thanks for reporting the issue.
We are reviewing it
Jan Vork commented
Addational information: even protected documents (done in Finder), ask to save changes after printing. Protected documents can't even be changed!