Using the new code for posting, I had a problem when previewing a post I was about to submit. Being a good poster I checked a link in my post to make sure it was valid. However, when I clicked 'Back' (using Firefox 3 beta 5) I was returned to the article by my post preview had disappeared. I am now previewing by opening the link in a new tab but I'm sure others will have this problem as well.
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I meant to say 'I was returned to the article but my post preview had disappeared'.
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Yeah, browsers often don't remember the modified Ajax form of a page. We are going to find a solution if we can, but you should probably open those links in a new tab/window.