Hi saguaros,
My mistake, forgot to open your test account. Now it should work.
The URL is the same as above.
Scroll down to the bottom and a new page should load.
Now it loads the new posts once but not when you get to the bottom the second time.
It's exactly the same error on mobile devices. There is a button "more" and if you press there, it is possible to load more posts once but not a second time.
Strange
Regards
Jonas