Thanks for providing a more straightforward example. The link you provided should work, but in Boost it's not clickable for me. In my experience, Boost only makes those clickable if they point to the instance I'm logged into.

Edit: Apparently not all links to the same instance works either. The example in this post doesn't work for me despite me being logged into that instance: https://lemm.ee/post/9752151

fingers crossed!