User blog comment:Sarah Manley/New Editor Scheduled for Sitewide Release/@comment-12891-20110908062928/@comment-126761-20110908124402

That's odd - and thanks for the diffs. I'll get that looked into - we implemented some more tweaks to try and prevent it fiddling with existing wikitext (for the exact reasons you bring up), it's possible that was overlooked in some way. For reference, one such tweak, was that it should no longer remove the first   from tables (which it did if it was empty).