Titles has style and would like to remove it

[ldmax]

Hi community!

Today I opened my Neorg note as usual, and found titles are with styles.
I updated yesterday.

Please see below screenshot:

Could someone kindly tell me what these styles are? Before yesterday there are no such highlights. I would like to remove them.
Thanks!

[pysan3]

Do you have this plugin installed? https://github.com/lukas-reineke/headlines.nvim

What does :Inspect say when you put your cursor on one of the headings.

[ldmax]

Yes it's because of headlines.nvim. After adding below configuration, the style is gone:

return {
  {
    "iulas-reineke/headlines.nvim",
    config = function()
      require("headlines").setup({
        norg = {
          headline_highlights = false,
        } 
      })
    end
  }
}

Thanks pysan3!