bug: Colors are not being handle properly on non-current window

[Xoffio]

Neovim version (nvim -v)

0.11.6

Neovim distribution

AstroNvim

Operating system

Windows11 and MacOS

Terminal emulator / GUI

Windows Terminal and Iterm2

Describe the bug

Code block backgrounds are not rendered correctly when the window is not selected. The background container of code blocks becomes invisible, and ghost artifact lines appear on the left side where code blocks are present.

This is the render when the window is active:

And this is when it's not:

Expected behavior

Code block backgrounds should remain visible and without any weird artifact regardless of window focus state.

Healthcheck output

==============================================================================
render-markdown:                                                          3 ⚠️

render-markdown.nvim [versions] ~
- ✅ OK neovim >= 0.11
- ✅ OK tree-sitter ABI: 15
- ✅ OK plugin: 8.12.0

render-markdown.nvim [configuration] ~
- ✅ OK valid

render-markdown.nvim [tree-sitter markdown] ~
- ✅ OK parser: installed
- ✅ OK ABI: 14
- ✅ OK highlights: ~\AppData\Local\nvim-data\lazy\nvim-treesitter\queries\markdown\highlights.scm
- ✅ OK highlighter: enabled

render-markdown.nvim [tree-sitter markdown_inline] ~
- ✅ OK parser: installed
- ✅ OK ABI: 14
- ✅ OK highlights: ~\AppData\Local\nvim-data\lazy\nvim-treesitter\queries\markdown_inline\highlights.scm

render-markdown.nvim [tree-sitter html] ~
- ✅ OK parser: installed
- ✅ OK ABI: 14

render-markdown.nvim [tree-sitter latex] ~
- ⚠️ WARNING parser: not installed
  - ADVICE:
    - disable latex support to avoid this warning
    - require('render-markdown').setup({ latex = { enabled = false } })
- ⚠️ WARNING ABI: unknown
  - ADVICE:
    - disable latex support to avoid this warning
    - require('render-markdown').setup({ latex = { enabled = false } })

render-markdown.nvim [tree-sitter yaml] ~
- ✅ OK parser: installed
- ✅ OK ABI: 14

render-markdown.nvim [icons] ~
- ✅ OK using: nvim-web-devicons

render-markdown.nvim [latex] ~
- ⚠️ WARNING none installed: { "utftex", "latex2text" }
  - ADVICE:
    - disable latex support to avoid this warning
    - require('render-markdown').setup({ latex = { enabled = false } })

render-markdown.nvim [conflicts] ~
- ✅ OK headlines: not installed
- ✅ OK markview: not installed
- ✅ OK obsidian: not installed

Plugin configuration

{
  checkbox = {
    checked = {
      scope_highlight = "@markup.strikethrough"
    }
  },
  code = {
    border = "thick",
    inline_left = "",
    inline_right = "",
    language_pad = 3,
    left_margin = 1,
    left_pad = 2,
    min_width = 100,
    position = "right",
    right_pad = 2,
    sign = false,
    width = "block"
  },
  file_types = { "codecompanion", "markdown" },
  heading = {
    border = { true, false },
    icons = { "󰼏 ", "󰎨 ", vim.NIL, vim.NIL, vim.NIL, vim.NIL },
    left_margin = { 0.5, 0 },
    left_pad = { 0.2, 0 },
    min_width = { 0, 120 },
    right_pad = { 0.2, 0 },
    sign = false,
    width = "block"
  },
  html = {
    tag = {
      buf = {
        icon = " "
      },
      rules = {
        icon = "󰺾 "
      }
    }
  },
  indent = {
    icon = ""
  },
  pipe_table = {
    border = { "╭",
      [3] = "╮",
      [7] = "╰",
      [9] = "╯"
    },
    preset = "round"
  },
  quote = {
    repeat_linebreak = true
  },
  render_modes = { "i", "n", "c", "t" },
  sign = {
    enabled = false
  }
}

Plugin error log

NA

Confirmations

• I have updated this plugin to the latest version using my plugin manager
• I have updated all treesitter parsers (:TSUpdate)
• I have provided the text contained in all screenshots as raw text in this issue. This means if there is a screenshot below it is the copy pasted contents of the file in the screenshot. I understand that my issue will be closed if I have not.

Additional information

Content of the screenshots

Debugging

Enable more verbose output:

bash
RUST_BACKTRACE=1 cargo run


Print debug info (values at `main.rs:154` already show u32 address):

rust
dbg!(&value);  // Prints debug representation
println!("{:?}", value);  // Use Debug trait