No pages in "Page builder" for some modules?!

Hi all,

I see more and more modules that doesn't appear in Page Builder because their pages was created in a different way.

Source of normal page block:

<div class="page_column page_column_single" id="page_column_1">

   <div class="page_block_container bx-def-margin-sec-leftright" id="page_block_742">

     <div class="disignBoxFirst bx-def-margin-top bx-def-border">

Source of the page with no records in Page Builder:

<div id="page_column_1" class="page_column page_column_first">

        <div class="disignBoxFirst bx-def-margin-top bx-def-border">

Where's "page_block_container" class and block ID? Admin just can't rearrange any blocks on such page.

And one of my modules works with these containers with class "page_block_container" and just doesn't work for modules which pages are made without these blocks. 

Did I miss anything?

Those blocks are generated with DesignBoxContent() function. Maybe you are asking something else, not sure.

 Thanks for reply. I gonna check it, not sure, but the fact is that these pages are not in Page Builder. Have to rewrite my module and release another version to work with such cases.

Those pages are hard coded and doesn't have any entry in sys_page_compose_pages.
I am not sure how will you modify that from a module unless making 100 edits everywhere.

 That's a problem: why they making hardcoded pages?

 RE:

 That also creates problems with some templates because the hard code pages display differently.  It really should be added for layout consistency with other pages.