I noticed this slight bug the other day when I was cleaning up my gallery and post history. It seems like any icons used in a post will appear under a new line when viewing the post through your post history. This confused me a bit as I thought my posts were all messed up until I checked on them in their original threads. Is this a bug? Can it be fixed? Pictures below.
Left: The original post. Right: The same post viewed through my post history.

Edit: This also happens with embedded images, like the ones above. These are side by side here, but in my post history they are stacked on top of each other.