Extra spacing around LSP Hover Buffer

[Juhan280]

Problem

I have recently updated neovim from v0.9 to v0.10. Everything is fine except this one particular thing.

Whenever I call lsp hover, I see extra blank lines around the codeblock. I know that this isn't that big of a deal, but i like it being compact, especially because I also use neovim on my phone and those extra lines look ugly on the small screen.

Here is a screenshot from v0.10.0

I discovered that those extra lines come from the backtics of markdown codeblocks.

Steps to reproduce

-- Run this file as `nvim --clean -u minimal.lua`

for name, url in pairs {
    lspconfig = "https://github.com/neovim/nvim-lspconfig",
    treesitter = "https://github.com/nvim-treesitter/nvim-treesitter"
} do
  local install_path = vim.fn.fnamemodify('nvim_issue/' .. name, ':p')
  if vim.fn.isdirectory(install_path) == 0 then
    vim.fn.system { 'git', 'clone', '--depth=1', url, install_path }
  end
  vim.opt.runtimepath:append(install_path)
end

vim.lsp.handlers["textDocument/hover"] = vim.lsp.with(vim.lsp.handlers.hover, {
    border = "rounded",
})

require("nvim-treesitter.configs").setup({
    ensure_installed = {"lua", "markdown"}
})
require("lspconfig").lua_ls.setup({})

Expected behavior

Like neovim v0.9.x
A screenshot from v0.9.5:

Neovim version (nvim -v)

NVIM v0.10.0; Build type: Release; LuaJIT 2.1.1716656478

Vim (not Nvim) behaves the same?

N/A

Operating system/version

Arch Linux

Terminal name/version

alacritty 0.13.2

$TERM environment variable

alacritty

Installation

pacman -S neovim

[clason]

Duplicate of #25718