I'm having the same problem on desktop, using Firefox, on pages with long tumblr embeds. The #Palestine tag is where I first encountered the problem today, but from there I found the page of user omegastag is an even better place to replicate this issue at the moment.
Seems to be an issue with a large amount of embeds, or particularly large ones.
Tumblr embeds probably exacerbate this since they're a complete mess, if you've ever looked in your browser console with one on the feed. I've been considering disabling them in my browser because they're so bugged.
Mike W
Sometimes, the screen begins to rapidly jitter up and down after scrolling to a certain spot in the timeline/comments. It stops if I scroll away, but resumes if I go back to the position where it started. It’s obvious in the attached video (Warning, it’s flickering as a result).
Cannot find the specific circumstances it appears in. Haven’t observed the behavior anywhere besides Cohost, so it’s unlikely a problem with de device.
iPad 9th gen, Safari (added to Home Screen).
2 people have this problem