When did the Facebook ticker stop ticking?

One of the newer Facebook features I really like is the ticker. It helps you see what’s happening quickly, instantly, across your entire circle of friends:

When it first came in, some months ago, it was everlasting. In other words, as you scrolled down, more was added. So, theoretically, you could see as many of your friends’ recent updates as you wanted.

That is no longer the case: