I don’t know whether this is a new “feature”, but I have just noticed that mousing over a headline marks the story as read. Not only is it very annoying, but I could not find a way to switch this behavior off in the preferences.
What I am doing wrong?
If you move your mouse near the little arrow on the left you can lock it. It’s the arrow there that marks a story as read.
That fixed it. Thank you so much.
Hooray, the system works!