Oh this one, it needs to be able to search all instances. I almost never want to search a single instance. I don't even know or care which instance I happen to be commenting on right now. Its all seamless with federation
Yes but what if you search and find a post that doesn't exist on your home instance? You'd be taken to a 404 page and can't do anything.
But I've got an issue on GitHub for this. And just raised a PR on Lemmy to support the changes I need for this. But a reminder, once you can search all instances you may encounter 404s opening the posts that you find.