cmp.complete() does not apply one-time config parameter to completion

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Minimal reproducible full 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'
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,
  },
  view = {
    entries = {name = 'wildmenu'}
  },
  mapping = cmp.mapping.preset.insert({
    ['<C-f>'] = function(_)
      cmp.close()
      cmp.complete({
        config = {
          view = {
            entries = {name = 'custom'}
          },
        }
      })
    end,
  }),
  sources = cmp.config.sources({
    { name = 'nvim_lsp' },
    { name = 'vsnip' },
  }, {
    { name = 'buffer' },
  }),
})
EOF

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

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

Description

I have <C-f> mapped to call cmp.complete() with a one-time config parameter, but the config seems to be ignored. In this example, the base config uses wildmenu while the mapping uses custom. The issue seems to happen with other config definitions as well (I've tried it with window borders double and single, with the same result—I never get a single border).

Steps to reproduce

1. Trigger completion by typing in Insert mode.
2. Press <C-f> to run the mapping that triggers completion with the new config parameter.
3. Completion runs, but the one-time config is not applied to this completion.

Expected behavior

cmp.complete() should display a completion view based on the config parameters passed into it.

Actual behavior

cmp.complete() runs, but the completion view displayed only uses the original setup config, and not the one-time config passed to it.

Additional context

No response