Bug: Icons show white separator

[SebasF1349]

Self Checks

• I'm using the latest lualine.
• I didn't find the issue in existing issues or PRs.

How to reproduce the problem

Only a component with an icon in an inactive lualine/winbar is needed. My theme is Catppuccin with minimal config too.

Expected behaviour

Separators should be transparent with a transparent theme/background.

Actual behaviour

This wasn't happening before, but I can't point when it started happening. As you can see, the separator is not transparent. It only happens if the last component is an icon, if it's text the separator isn't shown. And it only happens in the inactive window, active windows shows as expected (transparent if needed).

Minimal config to reproduce the issue

return {
  "nvim-lualine/lualine.nvim",
  event = { "BufReadPre", "BufNewFile" },
  dependencies = { "nvim-tree/nvim-web-devicons" },
  opts = {
    options = {
      icons_enabled = true,
      component_separators = { left = "", right = "" },
      section_separators = { left = "", right = "" },
      disabled_filetypes = {
        statusline = {},
        winbar = {},
      },
      ignore_focus = {},
      globalstatus = true,
    },
    sections = {
      lualine_a = { "mode" },
      lualine_b = {},
      lualine_c = {},
      lualine_x = {},
      lualine_y = {},
      lualine_z = {},
    },
    inactive_sections = {},
    tabline = {},
    winbar = {
      lualine_a = {},
      lualine_b = {},
      lualine_c = {},
      lualine_x = {},
      lualine_y = { { "filetype", icon_only = true } },
      lualine_z = { { "filename", path = 1 } },
    },
    inactive_winbar = {
      lualine_a = {},
      lualine_b = {},
      lualine_c = {},
      lualine_x = {},
      lualine_y = { { "filetype", icon_only = true } },
      lualine_z = { { "filename", path = 1 } },
    },
  },
}

Additional information

[miversen33]

I am seeing the same behavior but its only temporary on my system. In my specific case the separator between a static item (such as file name) and a conditional item (such as diagnostics) will cause this white separator to appear while the conditional item is loading. I also see this when I have git-blame enabled since that is also conditional. It seems like there was a change to how conditional logic is used to determine what separator to display?