- Create a topic "Test" with some random text
- Make sure you are watching the page X
- Create a new account
- Use the new account to add a reply to the topic just created
- Go to [[Special:NewMessages]] using the first account
(The reply should be displayed on this page)
- Click in the "Full thread" link
You will end up in page "X", which doesn't contains the thread. This link should point to the page "Thread:X/Test", where the full thread can be read.