I don't know if I just did something wrong, but it seems that all unread articles are marked as read when I click on the button in the menu, even those that are currently not visible.

For example: 12 unread articles are displayed in the list. I click on one of these articles and read it. It will be marked as read. 11 articles remain unread. But while I read article 12, more articles are found, so I have a total of 15 unread articles. The 3 new articles are not shown in the list yet. If I now click on the button "Mark as read" all 15 articles will be marked as read. The 3 new articles will never be displayed.

Is there some way, to mark only the visible articles as read? Or is my workflow wrong?