the id s4-workspace had been removed. However that caused the standard content area scroll bar to appear, which we don't want. So we added the following CSS to our customer CSS file:
/* Remove Scroll Bar for Main Content Area */
body #s4-workspace {
height: auto !important;
overflow-x: auto !important;
overflow-y: auto !important;
}
If there is a better way, feel free to chime in.
-- Anthony Baratta