Should it? hmm ’new_post_tpl’ is a template used just to style the look of new post itself - like headings, width of text etc. It is not full template, that is why I used: &tpl and &template, to specify which is full page template and which is just to style text. I found it somewhere, that you can use both calls. And I put one into chunks cause original one: ditto_blog - Blog Template was just there. Is it not right... ?
(However I have no idea how it could work earlier 
)