The bug
minecraft.net can list the currently open article below it. This is rather weird because you would normally not want to read it again.
For example when scrolling to the end of https://minecraft.net/en-us/article/minecraft-snapshot-18w30a it currently lists itself in the article panels below.
When trying to reproduce this you probably have to choose a current article.
I don't know but if I were a Mojang employee I would rather not fix this because it doesn't affect anything serious and in the present way the lists below every article are consistent so there's no need to change that.
And this should dealt as a feature request the same way WEB-1037 is.