Hi carlucci
It due to the different number of grids used in homepage and that blog page.
On homepage, the main content (on left side) has 8 grids and the sidebar has 4 grids.
On Blog page, if you want to have the same width, you go to file:
/templates/ja_teline_v/tpls/blocks/mainbody.php
see this line of code:
$mainwidth = $hasSidebar ? ' col-md-9' : ' col-md-12';
and change 'col-md-9' to 'col-md-8'
