Thank you paul921. I thought I was the only one gnashing my teeth over this snafu. You brought clarity, focus and resources to this absurd problem. What were they thinking? Seriously disappointing/frustrating/off-pissing.

You will be my hero if Mozilla ever recognizes/addresses this problem. Resolution is rightfully up to them.

There are now several posts about this on the new feedback site connect.mozilla.org (which has replaced mozilla.crowdicity.com). You can access this new site using your Firefox login. I would encourage anyone who has an opinion about this to visit the new site and leave some feedback.

=== For those who do not want any preview ===

It's finally here. Firefox 101 has a preference to bypass the combined print preview/setup overlay and go straight to the system dialog. Here's how you can try it out:

(1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button accepting the risk.

More info on about:config: Configuration Editor for Firefox. The moderators would like us to remind you that changes made through this back door aren't fully supported and aren't guaranteed to continue working in the future.

(2) In the search box in the page, type or paste print.prefer_system_dialog and pause while the list is filtered

(3) Double-click the preference to switch the value from false to true

If you need to restore the default display, you can call up the preference and double-click again to toggle the value back to false. There also will be a reset arrow at the right end of the row when the preference has a non-default value.