preview window's width is not arranged correctly when setting border

[kamecha]

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

Problems summary

SSIA

Expected

preview window's width and main window's width should be same. Or user can setting preview window's width when setting when setting previewSplit is horizontal.

Environment Information

• ddu-ui-ff version (SHA1): 361bc52
• denops.vim version (SHA1): df65c22
• deno version(deno -V output): deno 1.30.3
• OS: WSL2 Ubuntu22.04
• neovim/Vim :version output: NVIM v0.9.0-dev-1088+gd66832c76 Build type: RelWithDebInfo LuaJIT 2.1.0-beta3

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

set rtp+=~/.cache/dein/nvim/repos/github.com/vim-denops/denops.vim
set rtp+=~/.cache/dein/nvim/repos/github.com/Shougo/ddu.vim
set rtp+=~/.cache/dein/nvim/repos/github.com/Shougo/ddu-ui-ff
set rtp+=~/.cache/dein/nvim/repos/github.com/Shougo/ddu-source-file_rec
set rtp+=~/.cache/dein/nvim/repos/github.com/Shougo/ddu-kind-file

nnoremap [ddu] <Nop>
nmap <Space>u [ddu]
nmap <silent> [ddu]f <Cmd>call ddu#start({
            \ 'ui': 'ff',
            \ 'uiParams': {
            \   'ff': {
            \       'startFilter': v:true,
            \       'autoAction': {
            \           'name': 'preview',
            \       },
            \       'split': 'floating',
            \       'filterFloatingPosition': 'bottom',
            \       'previewFloating': v:true,
            \       'floatingBorder': 'rounded',
            \       'previewFloatingBorder': 'rounded',
            \   }
            \ },
            \ 'sources': [{'name': 'file_rec', 'params': {}}],
            \ })<CR>

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

1. type <Space> u f for start ddu

Screenshot (if possible)

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

[kamecha]

This may not be related to this issue, but when setting filterFloatingPosition is top and other setting is same above, the preview window is not arrange correctly I think.

nmap <silent> [ddu]f <Cmd>call ddu#start({
            \ 'ui': 'ff',
            \ 'uiParams': {
            \   'ff': {
            \       'startFilter': v:true,
            \       'autoAction': {
            \           'name': 'preview',
            \       },
            \       'split': 'floating',
            \       'previewFloating': v:true,
            \       'floatingBorder': 'rounded',
            \       'previewFloatingBorder': 'rounded',
            \   }
            \ },
            \ 'sources': [{'name': 'file_rec', 'params': {}}],
            \ })<CR>

screen shot...

[Shougo]

Fixed.