I had a conversation with rsFalse about one of his empty posts and he told me that he doesn't get a preview button.

So I suggested to uncheck "No Forced Preview" in User Settings , but he told me that there is no effect whatsoever.

I got curious and tried it out and it really doesn't seem to change anything. *

I'm not sure if this is related to his case and probably he already found another solution, but it seemed necessary to report that this feature doesn't seem to work.

UPDATE Solved

*) Sorry, pryrt  clarified it for me.

I wrongly expected the preview button to disappear.