I downloaded the 0.6, but does not show the left icons (Signs).
local signs = { Error = " ", Warning = " ", Hint = " ", Information = " " }
for type, icon in pairs(signs) do
local hl = "LspDiagnosticsSign" .. type
vim.fn.sign_define(hl, { text = icon, texthl = hl, numhl = hl })
end
The image, is how should to work.