I was able to troubleshoot and resolve the issue by first starting over completely. Then, once Joomla was installed and the template was active, I performed the same task;
I used the SP Page Editor to change the peoperty of the padding from 110 to 50 and it caused the issue once again, immediately. The SP Page editor failed to present the full page for editing, and the condition where only the footer shows is now present.
I was able to open a separate tab, and inspect the elements.
.sp-page-builder .page-content #section-id-1499684885832 {
padding-top: 50px; <-- This is the one that I changed
padding-right: 0px;
padding-bottom: 100px;
padding-left: 0px;
margin-top: 0px;
margin-right: 0px;
margin-bottom: 0px;
margin-left: 0px;
Adjusting the padding here back to 110 resolved the issue immeidately adn restored the SP Page Builder to now show the full page for editing.