Super late to the party, but thank you for this. I just found this coding and implemented it and noticed I was having the same problem. I knew I needed to turn that setting off to fix it but, being brand spanking new to Dreamwidth, had no clue where to find that setting. Thank yooou!

Also, something I noticed that others might or might not experience is that when one of my lists was way longer than the others, it vertically centered the shorter lists. In case anyone else runs into that, after a little Google-fu and a lot of trial and error, I found that adding "vertical-align: top;" to the td tag of the columns affected makes it look nice again like the live preview does. :)