Related bug info: When I googled the problem I ended up in debian bug 949315, which is closed and fixed, and as far as I can tell, was fixed in cups 2.3.3op1, and bullseye is 2.3.3op2.
The way I found debian bug 949315, was: I first found cups-filters issue https://github.com/OpenPrinting/cups-filters/issues/193 cups-filters issue 193 linked to a cups issue https://github.com/apple/cups/issues/5740 cups-filters #193 has a fix attached that was rejected, because there was a fix in cups. cups issue #5470 in turn, linked to a debian pull request https://github.com/OpenPrinting/cups/pull/23 pull request #23 refers to: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=949315 And bug 949315 is closed as fixed. The pull request had milestone v2.3.3op1 so that's why I'm guessing the fix came in 2.3.3op1.
