Not working on a specific page
https://stuff.mit.edu/afs/athena/astaff/source/src-9.0/third/freetype/docs/tutorial/step1.html
I cannot use any gestures on this page.
On https://www.idnes.cz/ too.
@hikmet517 MIT page is using an extremely restrictive content security policy header that prevents content scripts from working. The browser refuses to load the addon into that tab. I believe this is the related bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1411641
@TesJir This page is working as expected for me.
FoxyGestures also no longer works for me for images on GitHub issues. It works for images from other domains, so I assume it has something to do with the HTTP headers also.

@haasn The example image attached to your post works fine with Save Media As/Save Media Now commands. I can't reproduce the problem. Anything in the browser console?
To clarify, I mean the page I land on when clicking on the image link. (or choosing "view image"). Nothing in the console.