Why does the Jump Break not show up, in the blog display?
Not all blog owners understand the limited options, in the dynamic templates.
Why can't I see the entire post?
Compare the main page of this blog, to a formatted feed page of this blog.
Do you see the differences? I use Jump Break consistently, on my main page posts. Unfortunately, newsfeeds do not include the Jump Break, because the newsfeed standard was developed before Blogger developed their post summarisation feature, Jump Break.
Blog feeds will not contain Jump Break tokens.
Since dynamic views format the display using the blog posts feed, they have no way to include the Jump Break. The posts feed contains each post, in its entirety. The "Jump Break" token is part of the main page display, not the posts.
This is just one more reason why dynamic templates won't be chosen, on all blogs.
If you want to display your main page as I do, you can't use a dynamic template. Dynamic templates format their posts without using jump break. Some dynamic template "main page" views include text, broken; others include text, unbroken; and still others include only photos. None of the dynamic views include the Jump Break.
Dynamic templates require a full blog feed - comments and posts.
Remember that to use dynamic views, you have to set the blog feed to "Full". If you set the feed to "Until Jump Break", dynamic views won't work. The dynamic views format the post displays to the requirements of each different view (selected by the reader), and require the complete post content in the feed.
To see an example of what happens, using "Until Jump Break" - and with a Jump Break included, you can click here. If you want to display your blog in a dynamic template, you have to let the template determine (or not) where to break the posts.