"Show only current thread" and web client

Today I wanted to display the thread on a discussion topic as appears in the nd8forum.nsf.

I found the tick box “Show only current thread” in the embedded view and it works great in the Notes Client. For some reason it doesn’t work when I view response documents in the web client.

The documentation doesn’t suggest it only works in the Notes Client.

How does it work on the nd8forum?