using flashcards with tippy tabs (content issue)

Hello,

I'm using this plugin https://wordpress.org/plugins/tabby-responsive-tabs/ to organize the content inside the page.
When I put the flashcard on the first tab, it effectively shows up. But if I put it on the second, image is not loading (cf png). After some searches, I found this : https://wordpress.org/support/topic/galleries-work-in-1st-tab-but-not-in... , with this answer on the thread : "Some carousel/slider/gallery plugins render their content with zero height & width if the tab containing the content is not visible on page load."

could you help?

thanks !