MOdula Gallery with Oxygen builder

I can only get Modula gallery visible if it is placed within Gutenberg editor and no other Oxygen builder element is added within content area, between header and the footer rendered by the Oxygen template.

Working –> https://library.plavipixel.com.hr/modula-galerija-test/

But in this example, at the bottom of the page there is a section with 2 columns and within the right column a Modula gallery shortcode is added. The Modula gallery code is there, but nothing is rendered visible.

Can you please help and see what is causing the problem.

Thank you and best regards, Marin

The page I need help with: [log in to see the link]