Just wanted to mention that objects like pictures and such which are inserted in articles are sometimes automatically rearranged after being submitted.
Maybe it's a problem when multiple pictures are inserted in an article.
For example, I've centered all the pictures in my article and some of them got thrown into the left corner after I submitted them.
I've written them entirely in Planewalker's editor (not much text) and used Insert/Modify Image option to import it from another site.
It looked fine when I was submitting the entry.