Homecoming for Mastodon, my Safari extension that makes it easy to open Mastodon pages in your own instance or in the original instance, has been updated today in the iOS and Mac App Store.
Version 3.1 of Homecoming for Mastodon fixes a bug where you might see "Unfortunately, there was an error looking up the remote account" when using Homecoming from a user profile's /following page. The cause of this bug was that Mastodon does not display follows from other servers. I've now worked around the limitation.