This is the only community I've encountered so far where this happens. Its just text and not clickable.
This is quite a serious issue because I don't know how I will be able to keep up with all the other Arch linux users trying to tell me they use arch ~btw~, and I don't know how I will be able to tell them that I do too ~btw~.
I've run into the same things on different instances. However, it's fixed if I click on the community link then I get a page refresh (I think) and subscribe and block buttons.
I had to go through the search to find the community, and then it worked after a couple times clicking the subscribe pending and subscribe buttons. Thanks!