From https://github.com/emacs-lsp/lsp-mode/issues/2249#issuecomment-846569224:
This looks some corner case on clojure-lsp, please open an issue with more details and a minimal repro
Recently I've encountered this in some clojure file:

Sadly I have no reproduction steps yet. I'll update the issue if I will find small example.
Since the screenshot was taken some time ago and I didn't got the needed info about versions, I'll fill the rest of the template once I get this issue again. I hope this is OK.
Thanks for the report!
Yeah, we need to know what code made that happen
Any news on a repro for this issue @andreyorst ?
No, wasn't able to reproduce this yet. I'm using this every day, but so far nothing broke.
I wasn't able to reproduce this so far, so I'll close this. I'll reopen it if I ever find a way to repro this issue.