linux – Firefox is not showing the “View Page Info” option in the context menu

Previously, the right-click context-menu for Firefox would offer the “View Page Info” option as shown in the below image.

enter image description here

Recently, not sure when … that changed and that option is not available for the web pages.

One weird twist to this is that if there is a frame in the page, and the menu offers the view frame info, I can then get an option which will give me the desired pop-up window with buttons, one of which is to examine media with an option to save to disk, as show in this image (from URL = https://www.maketecheasier.com/saving-multiple-images-in-firefox/ ), but only for the contents of that frame, not for the entire page:

enter image description here

Is this a newly introduced bug in the Firefox interface, or is there something that I can toggle on/off in the Firefox “special options” or “advanced” tab? If the latter, I will need step-by-step details.

Current environment:

  • UbuntuMATE 20.04
  • Linux 5.4.0-73-generic #82-Ubuntu SMP Wed Apr 14 17:39:42 UTC 2021
    x86_64 x86_64 x86_64 GNU/Linux
  • Firefox 88.0.1 (64-bit) Mozilla Firefox for Ubuntu canonical – 1.0