Nvim-Dap-UI has white lines as border

[Rishabh672003]

Description

when opening nvim-dap-ui the windows has a white line as borders.
I tested with latest nightly commits, and this commit is the one that introduces this - neovim/neovim@0d88524

Neovim version

NVIM v0.10.0-dev-1744+g0d885247b
Build type: RelWithDebInfo
LuaJIT 2.1.1700008891
Compilation: /usr/bin/gcc-10 -O2 -g -Og -g -Wall -Wextra -pedantic -Wno-unused-parameter -Wstrict-prototypes -std=gnu99 -Wshadow -Wconversion -Wvla -Wdouble-promotion -Wmissing-noreturn -Wmissing-format-attribute -Wmissing-prototypes -fsigned-char -fstack-protector-strong -fno-common -Wno-unused-result -Wimplicit-fallthrough -fdiagnostics-color=always -DUNIT_TESTING -DHAVE_UNIBILIUM -D_GNU_SOURCE -DINCLUDE_GENERATED_DECLARATIONS -DNVIM_TS_HAS_SET_MAX_START_DEPTH -I/home/runner/work/neovim/neovim/.deps/usr/include/luajit-2.1 -I/usr/include -I/home/runner/work/neovim/neovim/.deps/usr/include -I/home/runner/work/neovim/neovim/build/src/nvim/auto -I/home/runner/work/neovim/neovim/build/include -I/home/runner/work/neovim/neovim/build/cmake.config -I/home/runner/work/neovim/neovim/src

   system vimrc file: "$VIM/sysinit.vim"
  fall-back for $VIM: "
/home/runner/work/neovim/neovim/build/nvim.AppDir/usr/share/nvim"

Run :checkhealth for more info

Terminal and multiplexer

Alacritty-0.12.3-1

Catppuccin version / branch / rev

main

Steps to reproduce

1. install nvim-dap and nvim-dap-ui
2. open dap-ui

Expected behavior

Actual behavior

Repro

-- DO NOT change the paths and don't remove the colorscheme
local root = vim.fn.fnamemodify("./.repro", ":p")

-- set stdpaths to use .repro
for _, name in ipairs({ "config", "data", "state", "cache" }) do
	vim.env[("XDG_%s_HOME"):format(name:upper())] = root .. "/" .. name
end

-- bootstrap lazy
local lazypath = root .. "/plugins/lazy.nvim"
if not vim.loop.fs_stat(lazypath) then
	vim.fn.system({ "git", "clone", "--filter=blob:none", "https://github.com/folke/lazy.nvim.git", lazypath })
end
vim.opt.runtimepath:prepend(lazypath)

-- install plugins
local plugins = {
	"catppuccin/nvim",

	{
		"mfussenegger/nvim-dap",
		config = function()
			local dap = require("dap")

			local dapui = require("dapui")

			dap.listeners.after.event_initialized["dapui_config"] = function()
				dapui.open()
			end

			dap.listeners.before.event_terminated["dapui_config"] = function()
				dapui.close()
			end

			dap.listeners.before.event_exited["dapui_config"] = function()
				dapui.close()
			end

			dap.adapters.codelldb = {
				type = "server",
				port = "${port}",
				executable = {
					-- provide the absolute path for `codelldb` command if not using the one installed using `mason.nvim`
					command = "lldb-vscode",
					args = { "--port", "${port}" },
					-- On windows you may have to uncomment this:
					-- detached = false,
				},
			}
			dap.configurations.cpp = {
				{
					name = "Launch file",
					type = "codelldb",
					request = "launch",
					program = function()
						local path
						vim.ui.input(
							{ prompt = "Path to executable: ", default = vim.loop.cwd() .. "/bin/" },
							function(input)
								path = input
							end
						)
						vim.cmd([[redraw]])
						return path
					end,
					cwd = "${workspaceFolder}",
					stopOnEntry = false,
				},
			}
		end,
	},

	{
		"rcarriga/nvim-dap-ui",
		event = "VeryLazy",
		config = function()
			require("dapui").setup({
				expand_lines = true,
				icons = { expanded = "", collapsed = "", circular = "" },
				mappings = {
					-- Use a table to apply multiple mappings
					expand = { "<CR>", "<2-LeftMouse>" },
					open = "o",
					remove = "d",
					edit = "e",
					repl = "r",
					toggle = "t",
				},
				layouts = {
					{
						elements = {
							{ id = "scopes", size = 0.33 },
							{ id = "breakpoints", size = 0.17 },
							{ id = "stacks", size = 0.25 },
							{ id = "watches", size = 0.25 },
						},
						size = 0.33,
						position = "right",
					},
					{
						elements = {
							{ id = "repl", size = 0.45 },
							{ id = "console", size = 0.55 },
						},
						size = 0.27,
						position = "bottom",
					},
				},
				floating = {
					max_height = 0.9,
					max_width = 0.5, -- Floats will be treated as percentage of your screen.
					border = vim.g.border_chars, -- Border style. Can be 'single', 'double' or 'rounded'
					mappings = {
						close = { "q", "<Esc>" },
					},
				},
			})

			vim.fn.sign_define(
				"DapBreakpoint",
				{ text = "", texthl = "DiagnosticSignError", linehl = "", numhl = "" }
			)
		end,
	},
	-- add any other plugins here
}

require("lazy").setup(plugins, {
	root = root .. "/plugins",
})

vim.cmd.colorscheme("catppuccin")
-- add anything else here

[Rishabh672003]

I guess they add a new highlight group for window separators