No background color when resolving conflicts with onedark colorscheme

[phuongpd2k]

How do I display colors when resolving conflicts? Currently, when I switch to other color schemes, the background color is shown when resolving conflicts, but when I switch back to onedark, the background disappears

This is example using gruvbox:

This is example using onedark:

This is my config:

return {
  "navarasu/onedark.nvim",
  opts = {
    style = "warm", -- Default theme style. Choose between 'dark', 'darker', 'cool', 'deep', 'warm', 'warmer' and 'light'
    transparent = true, -- Show/hide background
    term_colors = true, -- Change terminal color as per the selected theme style
    ending_tildes = false, -- Show the end-of-buffer tildes. By default they are hidden
    cmp_itemkind_reverse = false, -- reverse item kind highlights in cmp menu

    -- toggle theme style ---
    toggle_style_key = nil, -- keybind to toggle theme style. Leave it nil to disable it, or set it to a string, for example "<leader>ts"
    toggle_style_list = { "dark", "darker", "cool", "deep", "warm", "warmer", "light" }, -- List of styles to toggle between

    -- Change code style ---
    -- Options are italic, bold, underline, none
    -- You can configure multiple style with comma separated, For e.g., keywords = 'italic,bold'
    code_style = {
      comments = "italic",
      keywords = "none",
      functions = "none",
      strings = "none",
      variables = "none",
    },

    -- Lualine options --
    lualine = {
      transparent = true, -- lualine center bar transparency
    },

    -- Custom Highlights --
    colors = {}, -- Override default colors
    highlights = {
          -- make floating windows transparent
          -- NormalFloat = { bg = "none" },
          -- FloatBorder = { bg = "none" },
          -- -- but keep background for Lazy and Mason
          -- LazyNormal = { fg = '$fg', bg = '$bg1' },
          -- MasonNormal = { fg = '$fg', bg = '$bg1' },
          -- reverse colors for visual selection
          Visual = { fmt = 'reverse'  },
        },
    -- Plugins Config --
    diagnostics = {
      darker = true, -- darker colors for diagnostic
      undercurl = true, -- use undercurl instead of underline for diagnostics
      background = true, -- use background color for virtual text
    },
  },
}