Filter does not work properly

[uga-rosa]

Warning: I will close the issue without the minimal init.vim and the reproduction instructions.

Problems summary

The cursor blows up every time you type a letter.

Expected

Cursor does not move

Environment Information

All plugins are latest.

FYI: The cause commit is 367833a481c92a4078773582833038195676f04a

• deno version(deno -V output): deno 1.35.0

• OS: Ubuntu 22.04 (WSL2)

• neovim/Vim :version output: NVIM v0.10.0-dev-3750e5e

Provide a minimal init.vim/vimrc without plugin managers (Required!)

set runtimepath+=/path/to/denops.vim
set runtimepath+=/path/to/ddu.vim
set runtimepath+=/path/to/ddu-ui-ff
set runtimepath+=/path/to/ddu-source-file
set runtimepath+=/path/to/ddu-filter-matcher_substring

call ddu#custom#patch_global(#{
      \ ui: 'ff',
      \ sources: [#{name: 'file'}],
      \})

autocmd FileType ddu-ff call s:ddu_my_settings()
function! s:ddu_my_settings() abort
  nnoremap <buffer><silent> i
        \ <Cmd>call ddu#ui#ff#do_action('openFilterWindow')<CR>
endfunction

How to reproduce the problem from neovim/Vim startup (Required!)

1. call ddu#start({})
2. Input i to open filter window.
3. When you type something at random, the cursor is blown up to the ddu-default window.

Screenshot (if possible)

Upload the log messages by :redir and :message (if errored)

[Shougo]

Reproduced.

[Shougo]

Fixed.