WYSIWYG Editor: Items not staying in place

Content

I'm spending some of my downtime this week trying to spruce up our outdated LearnCenter homepages using the WYSIWYG Editor. I've had no problem pulling in Dynamic Objects, adjusting spacing and fonts, etc. I have selected that all grouped items remain "positioned absolutely".

When I click to "preview" mode - everything looks great. But when I save and I am returned to the previous page - it is all wonky! Entire sections of the page are floating on other sections that I hadn't even edited.

Is this a common user mistake? What am I missing..

Thanks,

B