[GraemeJ]

- I am on this thread an post my reply
- I go back to the portal, where I see that the thread has recently changed by my reply
- I click the thread
- The thread is shown but my last reply is not there.
- Only after asking a refresh from the browser, my reply appears.

I would say this is exactly how I would expect it to work. Until you do a refresh, you're only going to see a previously cached version - which, naturally, would not include a post you have just made.