bug: Floating windows not transparent (always dark variant)

[sujanbasnet]

Neovim version (nvim -v)

NVIM v0.10.1 Build type: RelWithDebInfo LuaJIT 2.1.1713484068

Terminal / multiplexer

iTerm2 Build 3.5.5 / Tmux 3.5

Describe the bug

With transparency = true and on rose-pine-dawn floating windows are of dark variant.

Repro

vim.o.packpath = "/tmp/nvim/site"

local plugins = {
  rose_pine = "https://github.com/rose-pine/neovim",
  -- ADD OTHER PLUGINS _NECESSARY_ TO REPRODUCE THE ISSUE
}

for name, url in pairs(plugins) do
  local install_path = "/tmp/nvim/site/pack/test/start/" .. name
  if vim.fn.isdirectory(install_path) == 0 then
    vim.fn.system({ "git", "clone", "--depth=1", url, install_path })
  end
end

require("rose-pine").setup({
  -- ADD ROSÉ PINE CONFIG THAT IS _NECESSARY_ TO REPRODUCE THE ISSUE
  styles = {
    transparency = true,
  }
})

vim.cmd("colorscheme rose-pine-dawn")

[joaopedroaat]

Same here

[mvllow]

I'm unable to reproduce this for both pmenu (pictured below) or any floating window. What is the output of :echo &bg?

The screenshots were not using this trick but maybe try an nvim alias to set the vim background based on system, e.g. for fish shell on macOS:

function nvim -w nvim -d "Start Neovim with adaptive background"
    set mode light
    defaults read -g AppleInterfaceStyle >/dev/null 2>&1

    if test $status -eq 0
        set mode dark
    end

    command nvim -c "set background=$mode" $argv
end