Why does the left column of the Opencart 3 blog disappear?

Question

opencart

Good afternoon!
Who has been working with opencart for a long time, or maybe someone met ...
Please tell me ... We have a problem with the mobile version with the left menu of the blog in opencart. Those. this left column on the site (the filter we have there now) works fine.
If the block with id="column-left" is shown on the desktop version of the site, then when you click on the button - mobile (and on all mobile devices), even with the extension 1440 - this block disappears.
In the column-left view, I removed the hidden-xs style.
Screenshots
1. prntscr.com/k5nc3u - desktop version
2. prntscr.com/k5ndgd - mobile version
What could be the problem? Where to see? And how to fix it at all?

Answer 1

The problem is in your journal template, it has a lot of its own modifiers. Look at the tpl itself of the page on which the left panel is displayed, and how js it is removed.