Every now and then I check on the communities, to see if a new one is created that might be of my interest.
Currently it's impossible for me to subscribe to anyone, once you get into the community, the button doesn't show up, just the legend saying subscribe, but it's useless.
I'm logged in, and it seems I can post...
Edit: It seems I can subscribe from the list of communities, out of the communities themselves... It's from withing that I can't subscribe.
Edit 2: A bug was filed already, 0.18 seems to have broken the "Subscribe" button. And a workaround of clicking on any conversation on the community makes the button show up again, within the conversation.
If that happens for me i usually refresh the site with Ctrl+F5. It removes the browser cache and reloads the site from the ground up, it usually makes the button to appear again.
Not going away by cleaning the cache, which BTW, I configured librewolf/firefox not to cache on storage, so everytime I try, there are 0 bytes to clean...