Print Box never shows a thumbnail of the page(s) to be printed.
I am running an iMAC 27 using mac OS X Catalina (10.15.7) When I select Print from the Hamburger drop-down (or by any other method -- I prefer MD + P) I get the familiar printer box but there seems to be NO WAY to see the thumbnail of the page or pages to be printed. For me this is votal because I often print selected pages from a large document or web view.
I am attaching a screen shot of what I get with FIREFOX.
Is this a systemic fault with Firefox or am I just in the dark?
There's a new printing user interface that's in the process of being rolled out that will give you a preview. You can enable it yourself by opening the page `about:config`, entering `print.tab_modal.enabled` and switching that to `true`.