I don't know if this is a bug or intended or my remembering is completely wrong here.

I remember that in v4 when you clicked somewhere in the read area (not on the links of user etc.) you were sent to the newest post of this thread? Now, we have to click on the thread link itself to get there. If you click in the area you're instead brought to the forum itself.

Why I brought this up is: When a thread title goes over two lines like the attached one it is possible to click between the lines and you don't go to the thread but the forum instead. Try it yourself. :)

You would not be able to click the whole area, as he name and the date are also links

As I said. The area but the links.

I'm honestly not sure that has ever been the case, however I will get a 4 instance up and running to see

What I am quite sure about is that the link itself was completely clickable and you couldn't click between the lines. Perhaps it wasn't clickable at all. But it wouldn't take you to the forum.