We're doing this tonight as demo.
Tab 4 should demonstrate the "Broken Tab" problem, because page URLs are CHANGING.
The original URL was http://billtowntest.blogspot.com/p/photos.html", and it should have REMAINED at this same URL -- if things were working right (which they are NOT).
The tab is trying to go to this above URL, which gives a
"Sorry, the page you were looking for in this blog does not exist. "
error -- because Blogger CHANGED the URL.
The URL is now http://billtowntest.blogspot.com/p/4-url-of-this-page-changed.html
This happened because I changed the TITLE of the page, and Blogger INCORRECTLY changed the URL to match the new title.
This is creating a huge MESS -- because any LINKS from other external sites will be BROKEN as soon as I update a page. Said another way, I DARE NOT update any of my blogs' pages, until Blogger fixes this problem.
This problem is discussed in the Blogger Product Form at this link:
posted 7/27/2012, updated 7/29/2012