My home desktop is running Buster (4.19.0-17-amd64) and firefox-esr 78.12.0esr-1~deb10u1. Neither translate.google.com nor images.google.com functions properly. If I go to Google Translate and enter "je ne sais pas" in the left window, nothing happens. It should automatically show a translation at the right. If I go to Google Images and search for "solenodon", I get a full page of fine pictures of solenodons. But there are two problems. If I put the cursor over an image, I get a pointing finger icon. (No, not that finger.) But if I click, nothing happens. It should open up a window at the right to lead me to the source of that image. Furthermore, if I scroll down, all the images below the first page appear just as rectangles filled with some solid color (most being brownish). The tests were done with firefox in standard security mode (not strict), and not using a private browsing window or any add-ons. I haven't noticed problems with any other websites.
Some history and other evidence... 1. I ran Stretch on this PC for about three years, and this all worked until one day a few months ago when it didn't. I upgraded to Buster hoping that would fix it, but it hasn't. 2. On a Stretch machine at work, this all works well. 3. I just removed my whole ~/.mozilla filesystem and did a clean start of firefox. The sites still failed. So it doesn't seem to be peculiar to my personal firefox configuration. 4. On my other browser (torbrowser), the sites work well. So the hardware can do it. I'd appreciate any suggestions on how to get this working. Thanks.