Sometimes it's a little annoying when a link you click on in the Webflow forums opens and you lose track of what you were reading... I know it's a lazy request as you can always right click and open in tab this way but I thought i would ask anyway :D
Unfortunately we don't have control over that. I would CMD/CTRL+Click on the link to open that link in a new tab.
This can be removed, Nelson demonstrated a way in settings this behaviour can be changed.