Hum, that's odd, clojure-lsp report the diagnostics as soon a buffer is changed

Maybe something with your flycheck or flymake setup?

ok, then maybe it's something with my combined clj-kondo / lsp setup, never mind then. I worried that everybody might have this experience which isn't optimal

works as expected on nvim lsp

I have the same problem here, only when I save the file, and sometimes only after I move the cursor 😅 never been a problem, but would be nice to have this updates in real time

Try following https://emacs-lsp.github.io/lsp-mode/page/troubleshooting/#check-if-any-package-or-wrong-config-could-be-causing-the-issue, if the issue doesn't happen with that, it's a problem with your package/config