PSE 2021 Organizer has a bug in the Print command that causes it to over-ride paper size settings and misprint photos. The results may vary depending on your printer, but for me, it sets the papar size to 5x7. Attached is what happens trying to print a 4x6 image onto 4x6 paper (which Organizer over-rides the Print dialogue box settings and the printer's settings from paper size 4x6 to 5x7.)
Do not waste time, ink, or photo paper trying to fix this. Adobe needs to issue an update with the correction.
As a work around, you can switch to Editor, and it will correctly print your photo.