Similar thing happened to me the other day, I checked Coracle and saw it wasn't a nostr problem. Ended up uninstalling then reinstalling Amethyst altogether, which fixed it
Seems like the subscriptions stop working on the all follows tab. If i switch to global and back, i get new notes, but nothing is coming in after that. no changes to relay list, no errors. Clearing cache didn't help, restarting the app also didn't.
nostr:npub1gcxzte5zlkncx26j68ez60fzkvtkm9e0vrwdcvsjakxf9mu9qewqlfnj5z