Description
In the Dublin release, the CSS attribute [body {height:100%;} ] has been introduced for UI enhancements on theme.css.
This can cause a broken layout on pre-upgrade settings in customer CMS pages.
The attribute [ body {height:auto;} ] is expected in the CMS stylesheet.
Workaround
If this occurs after a Dublin upgrade, change the CMS base stylesheet to:
BODY{ height: auto;}
Related Problem: PRB598569