Well, it looks like I figured out the weirdness. Here I thought I had uncovered some really helpful glitch that would improve the Eden Experience.
Basically, I have my web browser zoomed in on all the pages I visit to about 120% so I can read the text without straining my eyes. On Eden, that throws the formatting off and makes everything all wonkajeeby. It looks like THAT is what was making it look like the Cons were under the Pros on the review that I edited. Once I went back out to 100%, it looked fine.
I'm just not used to that throwing anything off, and I forget that I have it zoomed... so there you go. No drama, no exciting discoveries. Just me... zooming out on my web browser so that I can see Eden the way it was meant to be seen.