Turns out all I had to do was disable TD Composer 🙂 They should’ve added a warning when both plugins are active.

Hello, I’m having the exact same problem and to make sure it’s not caused by other plugins or custom code I created a fresh WordPress installation on https://update.rahetbally.com/ and installed ONLY Newsmag & the attached version of Visual Composer (I even deleted Jetpack and other default plugins) and yet it doesn’t work.

The page at https://update.rahetbally.com/test/ is supposed to have two columns “Desktop”: should be visible on lg,md,sm and “Mobile”: should be visible on “xs” only. But you can see clearly that none of the classes (vc_hidden-lg vc_hidden-md vc_hidden-sm vc_hidden-xs) are added to the columns.

Here’s the backend code for /test:
[vc_row][vc_column width="1/3"][/vc_column][vc_column width="1/3" offset="vc_hidden-xs"][vc_custom_heading text="Desktop"][/vc_column][vc_column width="1/3"][/vc_column][/vc_row][vc_row][vc_column width="1/3"][/vc_column][vc_column width="1/3" offset="vc_hidden-lg vc_hidden-md vc_hidden-sm"][vc_custom_heading text="Mobile"][/vc_column][vc_column width="1/3"][/vc_column][/vc_row]

You can see that the ‘vc_hidden’ classes are ignored in the generated HTML:
<div class=”vc_row td_uid_2_59889dbb6feb4_rand wpb_row td-pb-row”><div class=”vc_column td_uid_3_59889dbb6ffe4_rand wpb_column vc_column_container td-pb-span4″><div class=”wpb_wrapper”></div></div><div class=”vc_column td_uid_4_59889dbb7009e_rand wpb_column vc_column_container td-pb-span4″><div class=”wpb_wrapper”><h2 style=”text-align: left;font-family:Abril Fatface;font-weight:400;font-style:normal” class=”vc_custom_heading”>Desktop</h2></div></div><div class=”vc_column td_uid_5_59889dbb705e4_rand wpb_column vc_column_container td-pb-span4″><div class=”wpb_wrapper”></div></div></div>

Thank you,