Hi Sindy--
I ran into something like this once that had me beating my head against the wall. The answer turned out to be that the element in question had a negative first line indent (an outdent, if you will), that was causing the start tag to get pushed off the left edge of the Editor window. Check for that and see if it is true in your case. If so, you should be able to make that indent conditional on print output so it doesn't affect the Editor view.
--Clay