Here's what happened; I don't know if it's reproducible:
- Someone started a new thread at James F's talk page on mw.org. I watch the page, so I received a notification.
- I clicked on the main body (not the link) of the Echo message.
- I ended up in the wrong place on the page (in the following section), and I couldn't scroll up to see the new one.
This happened in Safari 8.0.6 on Mac OS 10.10