Inconsistent syntax highlighting

[ArjunSahlot]

See the following:

I noticed this in other cases too. When I just type the parenthesis and the first argument, there's no syntax highlighting, right when I type the comma, there's syntax highlighting. How can I have syntax highlighting all the time?

This is my entire LSP configuration if it's relevant:

return {
    {
        'VonHeikemen/lsp-zero.nvim',
        branch = 'v3.x',
        dependencies = {
            --- Uncomment these if you want to manage the language servers from neovim
            'williamboman/mason.nvim',
            'williamboman/mason-lspconfig.nvim',

            -- LSP Support
            'neovim/nvim-lspconfig',

            -- Autocompletion
            'hrsh7th/nvim-cmp',
            'hrsh7th/cmp-nvim-lsp',
            'L3MON4D3/LuaSnip',
            'hrsh7th/cmp-buffer',
            'hrsh7th/cmp-path',
            'hrsh7th/cmp-cmdline',
            'ray-x/lsp_signature.nvim',

            -- Lsp Lines
            'https://git.sr.ht/~whynothugo/lsp_lines.nvim',

            -- folke dev plugin
            "folke/neodev.nvim"
        },
        config = function()
            -- neodev must be before lsp config
            require('neodev').setup({
                library = {
                    enabled = true,
                }
            })

            local lsp_zero = require('lsp-zero')

            lsp_zero.on_attach(function(client, bufnr)
                local opts = { buffer = bufnr, remap = false }

                vim.keymap.set("n", "gd", function() vim.lsp.buf.definition() end, opts)
                vim.keymap.set("n", "K", function() vim.lsp.buf.hover() end, opts)
                vim.keymap.set("n", "<leader>ws", function() vim.lsp.buf.workspace_symbol() end, opts)
                vim.keymap.set("n", "<leader>vd", function() vim.diagnostic.open_float() end, opts)
                vim.keymap.set("n", "[d", function() vim.diagnostic.goto_next() end, opts)
                vim.keymap.set("n", "]d", function() vim.diagnostic.goto_prev() end, opts)
                vim.keymap.set("n", "<leader>ca", function() vim.lsp.buf.code_action() end, opts)
                vim.keymap.set("n", "<leader>rr", function() vim.lsp.buf.references() end, opts)
                vim.keymap.set("n", "<leader>rn", function() vim.lsp.buf.rename() end, opts)
                vim.keymap.set("n", "<leader>lr", function() vim.diagnostic.reset() end, opts)
            end)

            require('mason').setup({})
            require('mason-lspconfig').setup({
                ensure_installed = { 'tsserver', 'rust_analyzer' },
                handlers = {
                    lsp_zero.default_setup,
                    lua_ls = function()
                        local lua_opts = lsp_zero.nvim_lua_ls()
                        require('lspconfig').lua_ls.setup(lua_opts)
                    end,
                }
            })

            local cmp = require('cmp')
            local cmp_select = { behavior = cmp.SelectBehavior.Insert }

            cmp.setup({
                sources = {
                    { name = 'path' },
                    { name = 'nvim_lsp' },
                    { name = 'nvim_lua' },
                    { name = 'luasnip', keyword_length = 2 },
                    { name = 'buffer',  keyword_length = 3 },
                },
                formatting = lsp_zero.cmp_format(),
                window = {
                    completion = cmp.config.window.bordered(),
                    documentation = cmp.config.window.bordered(),
                },
                mapping = cmp.mapping.preset.insert({
                    ['<C-p>'] = cmp.mapping.select_prev_item(cmp_select),
                    ['<C-n>'] = cmp.mapping.select_next_item(cmp_select),
                    ['<C-y>'] = cmp.mapping.confirm({ select = true }),
                    ['<C-Space>'] = cmp.mapping.complete(),
                }),
            })

            cmp.setup.filetype('gitcommit', {
                sources = cmp.config.sources({
                    { name = 'git' },
                }, {
                    { name = 'buffer' },
                })
            })

            cmp.setup.cmdline({ '/', '?' }, {
                mapping = cmp.mapping.preset.cmdline(),
                sources = {
                    { name = 'buffer' }
                }
            })

            cmp.setup.cmdline(':', {
                mapping = cmp.mapping.preset.cmdline(),
                sources = cmp.config.sources({
                    { name = 'path' }
                }, {
                    { name = 'cmdline' }
                },
                {
                    { name = 'buffer' }
                })
            })

            require('lsp_lines').setup()
            vim.keymap.set("n", "<leader>ll", require('lsp_lines').toggle)

            require('lsp_signature').setup({
                hint_enable = false,
            })
        end
    }
}