nvim-cmp's pupup window doesn't close if command-line window is opened from command-line mode

[mawkler]

Describe the bug

If <C-f> is pressed command-line mode it opens the command-line window. However, nvim-cmp's completion window doesn't close which means that it hides the command-line window.

Minimal config:

if has('vim_starting')
  set encoding=utf-8
endif
scriptencoding utf-8

if &compatible
  set nocompatible
endif

let s:plug_dir = expand('/tmp/plugged/vim-plug')
if !filereadable(s:plug_dir .. '/plug.vim')
  execute printf('!curl -fLo %s/autoload/plug.vim --create-dirs https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim', s:plug_dir)
end

execute 'set runtimepath+=' . s:plug_dir
call plug#begin(s:plug_dir)
Plug 'hrsh7th/nvim-cmp'
Plug 'hrsh7th/cmp-buffer'
Plug 'hrsh7th/cmp-nvim-lsp'
Plug 'hrsh7th/vim-vsnip'
Plug 'neovim/nvim-lspconfig'
Plug 'hrsh7th/cmp-cmdline'
call plug#end()
PlugInstall | quit

" Setup global configuration. More on configuration below.
lua << EOF
local cmp = require "cmp"
cmp.setup {
  snippet = {
    expand = function(args)
      vim.fn["vsnip#anonymous"](args.body)
    end,
  },

  mapping = {
    ['<CR>'] = cmp.mapping.confirm({ select = true })
  },

  sources = {
    { name = "nvim_lsp" },
    { name = "buffer" },
  },
}

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

lua << EOF
local capabilities = require('cmp_nvim_lsp').update_capabilities(vim.lsp.protocol.make_client_capabilities())

require'lspconfig'.cssls.setup {
  capabilities = capabilities,
}
EOF

To Reproduce

1. Open Neovim
2. Press : to enter command-line mode
3. Press any character to bring up the completion menu, for instance c
4. Press <C-f>

Expected behavior

nvim-cmp's completion window closes when command-line window opens

[mawkler]

Works great, thanks! 🎉

[DmDurnov]

@hrsh7th
The error is being reproduced again
Possible fix:
lua/cmp/init.lua: 354 line
-autocmd.subscribe({ 'InsertLeave', 'CmdlineLeave' }, function()
+autocmd.subscribe({ 'InsertLeave', 'CmdlineLeave', 'CmdwinEnter' }, function()

[bobrippling]

@DmDurnov thanks for the tip - #1904 opened