I did see that bug, but noted it was an older version than mine and he referenced a specific error that I couldn't "connect the dots" as being related to my error. I'll download the Bullseye deb and see if that doesn't resolve the issue. THANK YOU for your support!
and pdf of scanned page. As a matter of thoroughness, printing to regular printer also prints blank page, not scanned image. FWIW.
and pdf of scanned page.
Print Preview does nothing. Printing to PDF (cups-pdf) prints blank page. I've attached requested log file, and PDF of scanned page printed to "PDF Printer". Choosing "save as" from gscan menu and saving as PDF works fine. I would assume this points to cups-pdf-printer as the issue; except I can print to PDF with every application except gscan2pdf. It seems gscan interacts/reacts differently with cups-pdf-printer. But you're the expert here, not me, FWIW.
gscan2pdf prints blank pages
lxqt-session in LXQT desktop
If it helps, the MtPaint color selector indicates the highlight color is #4B6983.
Desktop icon highlight color