Lately I've started having trouble with the "Go Advanced" and "Preview Post" buttons.
If I enter a comment and then hit "Go Advanced," the preview looks fine in the upper window, but my comment is blank in the lower editing window. If I then hit "Submit Post," I get the error that there is nothing in the post.
I thought I might get around it by just hitting "Go Advanced" and entering my comment there, but if I enter a comment and hit "Preview Post," again the lower editing window goes blank.
I can get around it by hitting the back button in my browser after previewing my post, and editing the comment in the original comment space and submitting from there.
This does not happen every time, but almost every time I comment with a URL and a Quote.
Just started happening to me within the last two weeks or so. Never had a problem before.