A privacy issue was addressed with improved handling of files. This issue is fixed in iOS 18 and iPadOS 18, macOS Sequoia 15. An unencrypted document may be written to a temporary file when using print preview.
https://support.apple.com/en-us/121250
https://support.apple.com/en-us/121238
https://euvd.enisa.europa.eu/vulnerability/EUVD-2024-38664