Open the selected article in a new tab. Read tab. Close the tab with control-w. Mouse focus is now the search bar and not the article view. Next and previous commands now become terms in the search box which is immediately executed, losing whatever state the article view as in. Search has to be terminated and article header listing box sort order is random. Reproducible: Always
Closing the tab with ctrl-w makes the focus the search bar. Closing the tab with right mouse selecting 'close tab' makes the focus the current article.
*** This bug has been marked as a duplicate of bug 202370 ***