Evernote for Mac, 10.7.6-mac-ddl-public (2321) on MacOS Catalina. May have failed on a previous version.
I selected 10 notes from a notebook, then choose from the menu Note > Open in New Windows. They all open up.
One at a time, I highlight a Note window and type Command-P. In the print dialog I choose PDF > Save as PDF. I enter a unique file name and save the PDF.
All 10 PDFs have the same content: the text from the first Note window.
I can easily duplicate this error.
If I open one Note at a time and print it, the correct content is included.
This *may* have been failing in a previous version. It failed in whatever version I was running on Feb. 9 when I PDF'd 10 files and emailed them to a colleague, who just notified me of the problem today. I recently upgraded to this version due to the separate "blank window" bug, but I do not know whether I upgraded before or after Feb. 9.