There’s definitely something weird going on between those two instances. I just popped over to my Lemmy.world account and couldn’t find that community in the exact same search I just did on this account. Maybe something having to do with Lemmy.world getting hacked yesterday and someone on Lemmy.ml still being overly cautious?

Edit: and just now I tried again and got different search results, found the sub, and was able to subscribe. Weird. Glitch in the matrix?