Reference field filter problems in multilingual dynamic pages (wix-blog/post page)

Hello,
I have redesigned the Wix post page and used my own collection in addition to the post collection and category collection from the app to add some data to the post page.

Now I’m trying to filter repeater items by a reference field to the “post categories” to show only items relevant to the current post article - but this doesn’t seem to work in a multilingual dynamic page. When I connect the reference field on the English version, everything works fine - but in the German version there is a connection error and it doesn’t work. I’m also not sure how to filter out the category of the post being displayed. Is there a workaround or code? Does anyone have any ideas?

The post page displays an article, and the repeater should display relevant articles related to the article category.

Thanks for any help!