I haven’t been able to nail this down properly but often, when browsing threads containing a few (animated) gifs like the gif bank if I scroll down past a few of the posts and settle on one, then scroll up a line, the browser will automatically scroll up past all of the posts I’ve scrolled through, to the point at which I started browsing the thread.
I just tried this with the link I posted above which loads the thread from the first post and did not get the bug.
So this is only happening when I browse to the thread from
I just had a scroll up (although much smaller) in the png and jpg thread.
I think I’ve only noticed it in image threads and for sure in gif heavy threads.
Mobile users may have a different experience as I’ve noticed a lot of weird browser behaviour on me phone.
did a little testing in the png thread and I think you are right. If I scroll down to the last two posts, cocaine kitty and old man dog. If I can see any of old man dog (an imgur link) post and then scroll up it jumps, if all I can see is cocaine kitty (pasted images) then I can scroll up without issue.