fromSignatureHelp exception with lsp server (might be react-ace related)

[avivbrg]

Hi, I'm testing with react-ace and python-lsp-server and got several exceptions in fromSignatureHelp (signatureIndex ==0, el == []). However, upon further debugging it seems the trigger was the react-ace component being updated with a different value than the initial value (this also caused the lsp server to lose sync with the document).

Fixing the react-ace initialisation fixed the issue, but it seems ace-linters is not guarded against this scenario - is there a way to guard against it?