Bug: Flicker Issue on Lualine Still Exist

[ochi12]

Self Checks

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

Expected behaviour

This was Already Solved In issue #744 I already looked up the source code in and confirmed it was already commited d2a727.

Actual behavior

The flicker issue is still bugging me Specifically when toggling NeoTree. Also when opening Telescope just like in [ issue #1220 ] It also do flicker

Minimal config to reproduce the issue

local lualine_c = function()

    local devicons = require("nvim-web-devicons")
    local theme = require("lualine.themes.catppuccin")
    local mocha = require("catppuccin.palettes").get_palette("mocha")

    -- overriding default colors
    theme.normal.c.bg = "#242435"

    -- defining section colors
    local z_colors = {
        left = {
            bg = theme.insert.a.bg,
            fg = theme.insert.a.fg,
        },
        right = {
            bg = theme.normal.b.bg,
            fg = theme.insert.b.fg,
        },
    }

    local y_colors = {
        left = {
            bg = mocha.red,
            fg = mocha.base,
        },
    }

    require("lualine").setup({
        options = {
            theme = theme,

            ignore_focus = { "neo-tree"  },
            disabled_filetypes = { statusline = { "neo-tree" }  },
            section_separators = { left = "", right = "" },
            component_separators = { left = "", right = "" },
            globalstatus = true,

            refresh = {
                statusline = 100,
            }
        },

        sections = {
            lualine_a = {
                {
                    "mode",
                    separator = { right = "" },
                    fmt = function(str)
                        return " " .. str
                    end,
                },
            },
            lualine_b = {
                {
                    function()
                        return ""
                    end,
                    padding = 0,
                    color = { bg = mocha.surface1 },
                    separator = { right = "" },
                },
                {
                    "filename",
                    padding = { left = 2, right = 2 },
                    colored = false,
                    fmt = function(str)
                        local name = str
                        local extension = vim.fn.fnamemodify(name, ":e")
                        local icon = devicons.get_icon(name, extension, { default = true })
                        return icon .. " " .. str
                    end,
                    symbols = {
                        unnamed = "unnamed",
                        newfile = "new file",
                        modified = MyIco.file.modified,
                        readonly = MyIco.file.readonly,
                    },
                    separator = { right = "" },
                    color = { fg = mocha.text },
                },
            },
            lualine_c = {
                {
                    "branch",
                    color = { fg = mocha.surface1 },
                    icon = "",
                },
                {
                    "diff",
                    colored = false, -- Displays a colored diff status if set to true
                    symbols = {
                        added = MyIco.file.added,
                        modified = MyIco.file.modified,
                        removed = MyIco.file.removed,
                    }, -- Changes the symbols used by the diff.
                    source = nil,
                    color = { fg = mocha.surface1 },
                },
            },
            lualine_x = {
                {
                    "diagnostics",
                    symbols = {
                        warn = MyIco.diagnostics.warn .. " ",
                        error = MyIco.diagnostics.error .. " ",
                        hint = MyIco.diagnostics.hint .. " ",
                        info = MyIco.diagnostics.info .. " ",
                    }
                },
                {
                    function(str)
                        local current_lsp = vim.lsp.get_active_clients()[1]["_log_prefix"]
                        return "LSP ~ " .. current_lsp:sub(5, -2)
                    end,
                    icons_enabled = true,
                    icon = " ",
                    color = { fg = mocha.blue },
                },
            },
            lualine_y = {
                {
                    function()
                        return " "
                    end,
                    separator = { left = "" },
                    padding = { left = 0, right = 1 },
                    color = y_colors.left,
                },

                {
                    function()
                        local cwd = vim.fn.getcwd()
                        local home = vim.fn.expand("~")
                        cwd = cwd:gsub(home, "~")

                        --local cwd_list = vim.split(cwdp, "/")

                        --cwd = table.concat(vim.list_slice(cwd_list, 1, 3), "/")

                        return cwd
                    end,
                    color = { fg = mocha.text },
                },
            },
            lualine_z = {
                {
                    function()
                        return "󰦪"
                    end,
                    separator = { left = "" },
                    padding = { left = 0, right = 1 },
                    color = z_colors.left,
                },
                {
                    "progress",
                    color = z_colors.right,
                },
            },
        },
    })
end

return lualine_c

Additional information

[ochi12]

https://github.com/user-attachments/assets/ee5d5a0d-4bf0-4a33-aa0d-f704e92761e7

[bighi]

Also flickering for me. I tried 4 different themes, and they all had the issue, so it's not associated with a particular theme.

I'm using the latest iTerm app, on an M3 Max MacBook Pro.

[MarceliJankowski]

I'm running into the same issue when toggling Netrw. Lualine also flickers when I open new buffers from within Netrw. These flickerings do not happen every time; more like every 3-4 time.

[maleksware]

This seems to be happening only with globalstatus = true. The cause of the flicker seems to also be the cause of the highlight group corruption bug in NvimTree (untested with other trees) (https://github.com/nvim-tree/nvim-tree.lua/issues/245)

Edit: the highlight corruption has been fixed there, small compatibility issue (1c9553a19f70df3dcb171546a3d5e034531ef093).

[shadmansaleh]

Can you check if #1316 fixes the flickering?

[maleksware]

Doesn't seem so. The flicker is now longer (I'd assume it to be 100ms as specified in the PR).

[shadmansaleh]

Doesn't seem so. The flicker is now longer (I'd assume it to be 100ms as specified in the PR).

Give it another go if you have time. I've added another fix.

[maleksware]

This has fixed it indeed. Thanks a lot! I'd also wait for the OP's replication but it worked no problem for me (in the circumstances similar to the original issue).

[sand4rt]

Thank you for looking into this! The flicker still exists for me unfortunately, but seems to be less, also got errors when i open telescope sometimes;

 E5108: Error executing lua ../.local/share/nvim/lazy/lualine.nvim/lua/lualine.lua:429: Invalid window id: 1003 
 stack traceback: 
 [C]: in function 'nvim_win_call'  .../.local/share/nvim/lazy/lualine.nvim/lua/lualine.lua 
 a:429: in function <.../.local/share/nvim/lazy/lualine.nvim/lua/lualine.lua:318> 

Related; https://github.com/nvim-lualine/lualine.nvim/issues/1220

[shadmansaleh]

@sand4rt see if your issue is fixed now in #1316

[sand4rt]

@sand4rt see if your issue is fixed now in #1316

@shadmansaleh thank you! the error is gone, the flicker still exists for me unfortunately.

[shadmansaleh]

@sand4rt try the latest commit on that pr. If the flicker still exists do provide a minimal config and instructions to reproduce it.

[sand4rt]

@shadmansaleh Big improvement! Although, there's still some flickering most of the time (especially when toggling Telescope + editing a large file). Please let me know if this is sufficient; otherwise, i’ll start disabling plugins one by one and send the minimal config

[shadmansaleh]

I don't see flickering on either cases. Are you sure you aren't doing something in your config that might delay the first render? Try to create an isolated minimal config with https://github.com/nvim-lualine/lualine.nvim/blob/640260d7c2d98779cab89b1e7088ab14ea354a02/scripts/nvim_isolated_conf.sh

A short screen recording would be a good addition too

[sand4rt]

Hey @shadmansaleh, it was hard to pinpoint the flicker to a specific plugin, but i've found a consistent way to reproduce it:

https://github.com/user-attachments/assets/6af30712-02cf-4b4c-9277-1c4d4e2e7978

1. Start Neovim
2. Open Telescope using Space + Space

The flicker only happens once at this point, and nvim-cmp seems to be related;

https://github.com/sand4rt/lualine-flicker

Do you want me to send a larger config where the flicker happens more often?

[shadmansaleh]

Can you try to drop as much as stuff from your lualine config while the bug still occurs ? I mean just the lualine config you gave me is 400 lines

Do you want me to send a larger config where the flicker happens more often?

Quite the opposite. I want a config as little config and as few plugins as possible. I don't have the time nor the energy to go through thousands of lines of config that pulls several times more as plugins.

[sand4rt]

@shadmansaleh I've removed additional unrelated code. Hopefully, this streamlines things—but let me know if i can do anything else. It's basically a clean install of telescope+lualine+cmp. You might have to spam space + space and esc to close telescope a few times to see the flicker

[ochi12]

I think this is a status line issue tho. I haven't tried using my config yet without the Lualine installed

[shadmansaleh]

@sand4rt unfortunately, I couldn't reproduce the flickering you mentioned with your config. Only case I could find flickering in that branch is with cmdheight=0 without showmode=false. That makes sense and showmode and statusline is fighting for the same space. The builtin statusline behaves the same in this case.

I'll merge that pr and mark this as resolved for now