When printed, the objects behind the watermark appear differently.

Please kindly open and review the PDF documents can be found in attachment.

- PDF TEST 2.dwg.pdf is original PDF file

- PDF TEST 2.dwg_print.pdf is printed PDF file

I can recognize differences among the files.

How can I avoid this differences?

This does not happen with PDF viewers built into web browsers(Chrome or Edge) or other PDF viewers.