oke seems that came by deactivating wpml.
Had several blog pages that redirected to the wrong one.
So fixed that and then it worked.
So I could deduct the fault to my child theme.
If I activate it then it stops working.
So I deleted my functions.
Still happens.
Any idea where the problem might come from?
must be something php related or so?
or a new template gp uses recently?
Also just seen that it’s not only my blog.
also the search results are affected.
So it’s something with the load on scroll behaviour.
Hmm really strange.