A set of settings for printing does not save changes for Mozilla Firefox

Mozilla Firefox has options for printing to print the background color and print the background image. I select these options, then save as a new set of settings. But the next time you print and select your own set of settings, the settings are not active - checkboxes are not highlighted in “Print background color” and “Print background image”.

I observe the problem both in macOS Sierra, and in mac OS Mojave, I have not tried other macOS, because I do not need them. Help set up to save the settings.