panel-grid-cell doesn’t display on custom page type on Front Page

post_type=page :
If I add a row and divide it to 2 columns after save everything looks great on Front Page.

post_type=custom :
On Back Page if I add a row and divide it to 2 cols it looks ok but
I need to read and put this custom post type content in bottom other page but if I use

$some_post = get_post( ID );
$some_post_content = $some_post->post_content;

I get only widgets one by one in single columns. I saw in page source-code that the content not including divs like panel-grid-cell. What am I doing wrong?