but the BUG is still there and needs to be fixed. For example I still see social icons showing up at the top of the page (even if it is set to show up at the bottom).
Hi. Not a bug. You should use Predefined Header as it is. Otherwise, you should create your own Header.
Users in the past asked for predefined Headers options to be many. But in my opinion it is meaningless. In my practice, there has never been a design that would come up for one of the predefined Headers.
Enabling SEARCH also causes the Menu shift down over the BODY area
This is not a bug. You can not put in the box more things than it can accommodate. You need to optimize the number of menu items and the length of words if you want to use predefined Header.
You should explore Bootstrap Grid system so that you understand what is happening.