When I create an new event in the frontend the head of my website disappears. I tested with a clean Joomla installation and protostar as default template. The html code <header class="header" role="banner"> …</header> is visible on all sites in the source code but it doesn't take effect on the the edit/create event site.
This happens with all templates based on protostar. See attached pics.
There is no problem when I use beez3 as default template. There is a different code in the header tag.