Solved! Gifs do not appear in Facebook or Tweetdeck on Firefox

[digitaldraco]

This doesn't happen all the time but often gifs will just vanish from Firefox and Twitter. All other images load fine. They load fine in the apps on my iPhone.

This only happens with Firefox, and only on those two sites. Gifs load fine everywhere else. I haven't added or removed any add-ons or extensions in years. This has been happening for months.

I run uBlock Origin but have it disabled for Firefox and Twitter because I thought that might be the cause. It doesn't appear to be the case.

I have the most recent version of Firefox (82.0.2) and am running the most up to date version of Catalina (10.15.7).

I have tried clearing cookies and cache as well.

 

[digitaldraco]

No answers is about what I expected. Google didn't have any for me either. Alas.

 

[rgd1101]

test in private windows?
test without any addon?
you can do f12 and see if there is any error in the console