My facebook chat's sidebar's notifications are missing?

[Meg]

The immediate notifications that are usually above chat are missing (the ones that say so and so has liked a page, so and so is listening to whatever on spotify, etc). I have no idea how this happened and it's been like this for a couple of days. My siblings have signed in on my laptop and their chat sidebar notifications are fine. I'm not sure how to get it back. Help?
My browser is updated. When other people go on to their accounts on my computer, theirs works fine. It's only my account.

[Lynda J]

Update your browser.