Hi Hector. I'm having the same issue on my Canon MF645CX. Is there an option for the Canon driver to use the normal selection for 2-sided printing (circled in red in the screenshot)?The workaround you posted with going to Printer Features > Finishing...
That didn't work. This worked: https://community.usa.canon.com/t5/Office-Printers/MF644cdw-setting-up-the-default-paper-tray/m-p/302544/highlight/true#M10922
