Strange gallery problem

I have send two tickets to the helpdesk last week but haven’t received an answer yet. So I thought maybe someone can help me overhere.

I changed my WordPress theme to twenty twenty two. Before I used a theme for more then 8 years which someone had written for me. The transition wasn’t easy but is almost finished. But the are still some problems to be resolved.

On my oldest pages with envira gallery’s on it, the gallery is posted twice. (See; https://stefringoot.com/vector-illustraties-in-opdracht/) it looks like there is a standalone gallery before the normal page. This is not what I want. The problem only happens on older pages.

While editing the WordPress post the problem isn’t visible. And if I delete all content and use only a template for the page the gallery is still there. The only solution until now is to create a new page, copy the content from the old page, delete the page and add a redirect. That’s a lot of work with so manny gallery’s.

Anyone has a solution?

Greetings from Holland (sorry for the bad English… )

stef

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