[Resolved] ACF translation broken

For a website with several languages we use an ACF Flexible content field to "stack" sections upon each other. We use the WordPress editor to make changes in translations. We have set the ACF flexible content field to copy once and all sub fields also to copy once. On almost all pages this works as expected. We can copy a page to a new language and update alle fields (and the order etc) and this works as expected (the content is independent for each individual language. But, we now experience that in the front end on the home page the sections are not retrieved correctly