Errors on formatting buffer via vfmt disappears after some time

[ep4sh]

Summary

Errors on formatting buffer via vfmt disappears after some time

Steps to reproduce

• Vim version : version 8.2.2891

plugins:

Plug 'neoclide/coc.nvim', {'branch': 'release'}
Plug 'fatih/vim-go'
Plug 'AndrewRadev/splitjoin.vim'
Plug 'tweekmonster/gofmt.vim'
Plug 'mbbill/undotree'
Plug 'hashivim/vim-terraform'
Plug 'junegunn/fzf', { 'do': { -> fzf#install() } }
Plug 'junegunn/fzf.vim'
Plug 'arcticicestudio/nord-vim'
Plug 'vim-airline/vim-airline'
Plug 'flazz/vim-colorschemes'
Plug 'preservim/nerdtree'
Plug 'python-mode/python-mode', { 'for': 'python', 'branch': 'develop' }
Plug 'editorconfig/editorconfig-vim'
Plug 'vim-scripts/groovy.vim'
Plug 'NLKNguyen/papercolor-theme'
Plug 'ollykel/v-vim'

vimrc:

" v settings
"
" Disable highlight white space after "[]".
let g:v_highlight_array_whitespace_error = 0

" Disable highlight white space around the communications operator that don't follow the standard style.
let g:v_highlight_chan_whitespace_error = 1

" Disable highlight instances of tabs following spaces.
let g:v_highlight_space_tab_error = 1

" Disable highlight trailing white space.
let g:v_highlight_trailing_whitespace_error = 1

" Disable highlight function calls.
let g:v_highlight_function_calls = 1

let g:v_highlight_fields = 1

" Enable automatically formatting file via "v fmt -" before writing buffer.
let g:v_autofmt_bufwritepre = 1

Expected Behavior

Observed Behavior

Error detected while processing BufWrite Autocommands for "*.v"..function _VFormatFile:
line    4:
While formatting the buffer via vfmt, the following error occurred:
line    5:
"bla.v" 4L, 33B written
Press ENTER or type command to continue

Explanation

Errors on formatting buffer via vfmt disappears after some time. I am not sure whether it bug or not...

Implementation

Unfortunately, I have not ideas how to fix it :( I would really be interested in helping but even can't recognize this is an error of my setup or v-vim plugin. It might be reasonable to open a new buffer (I guess vim-go acts like this) for errors:

Appreciate your time and suggestions. Thanks!