And after some testing, I think I've re-created the issue in the above post. At a bare minimum, to 'hide' your post you need to quote 3 people and remove the ending quote from the first one. Using these quotes,
Isn't enough to re-create the problem. As far as I can tell you need to use these,
Code:
[quote='knight504'][/quote]
To see what I mean, just 'reply' to the hidden post above. You can see the matter for yourself.
Now, as to WHY this is happening, I can't say. What I do know is that its a server-side issue and not something like the web-browser rendering the text invisible. If you take 'view source', you'll see that the content itself has NOT been sent from the server (at least, I couldn't find it. Then again, I'm no HTML expert...).
-chronodekar