jump to first message in forum or thread

There needs to be a way to navigate to the beginning of a forum post, as they are often used as guides with discussions allowed. In other words, the important content of the forum gets lost if the creator forgets to pin or cannot pin the first message.
With threads it's a similar issue. 

So please, either automatically pin the first message on these, or have a separate button to jump to the top, as it is currently nearly impossible to view the most relevant part of each feature.