I'm not 100% positive, but this might be because your sticky entry is missing a <center> tag. (We made a change to our HTML cleaner to be more strict about tags needing to be closed in the same order they were opened in, for a bunch of reasons.) In the second row of the table, your opening tags are <tr><td><br /><center>, and as far as I can tell without pulling the source into my editor and doing all the proper indents and matching and all, I don't think that particular <center> tag is closed. (The one you opened before the table itself was closed, but I don't think that one was.)

Try adding that </center> where it belongs and see if that fixes it? If that doesn't work, let us know your browser/device/device OS/browser version.