Basically any post that’s long enough to extend past the bottom of the page.
So Stranger’s avatar doesn’t slide along down as you scroll all the way down?
How long until herd immunity? - #5 by Stranger_On_A_Train
(also using Chrome on a PC with Windows 10)
ETA: Actually the avatar remains in the top left corner as one keeps on scrolling down, (so that it never disappears on ya), I should have said.