Coc.nvim: List of all the diagnostic errors

[yml]

Describe the bug
Is there a way to list all the diagnostic error? Few weeks ago I could do :lopen but now it looks like you are cleaning it up.

To Reproduce
Steps to reproduce the behavior:

1. Open a buffer with diagnostic error
2. do :lopen

Expected behavior
I would expect to see all the error from the current buffer instead the location list is empty.

[chemzqm]

The :lopen can't work with 0.0.28 release, sorry for that.
The diagnostic have been reworked, it's fixed on master branch.

[chemzqm]

Released v0.0.29

[yml]

I might be misunderstanding something but when I do :lopen is see a location list window with the list of issues in the current buffer. However when I select a line and <CR> the location list is deleted and the window not close.
Is that the expected behavior ? It makes inspecting the errors very tedious.

btw thank your very much for making such an amazing plugin.

[chemzqm]

Looks like location list is cleared by other plugin, checkout https://github.com/neoclide/coc.nvim/wiki/F.A.Q#why-location-list-sometimes-doesnt-work

[yml]

I do not use Ale. The list of plugins I am using is rather short and I kind find the one that conflict with coc.

"*****************************************************************************
" Plug install packages
"*****************************************************************************
Plug 'tpope/vim-commentary'
Plug 'airblade/vim-gitgutter'
Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
Plug 'junegunn/fzf.vim'
Plug 'sheerun/vim-polyglot'
Plug 'Yggdroot/indentLine'
Plug 'tomasiser/vim-code-dark'
Plug 'SirVer/ultisnips'
Plug 'honza/vim-snippets'
if has("nvim")
    Plug 'vimwiki/vimwiki'
    Plug 'sgur/vim-editorconfig'
    Plug 'fatih/vim-go', {'do': ':GoInstallBinaries'}
endif
if has("nvim-0.3.0") 
    Plug 'neoclide/coc.nvim', {'do': { -> coc#util#install()}}
endif

My full vimrc can be seen here. Any clue on which plugin has this unexpected side effect with coc would be appreciated.
Thank you

[chemzqm]

It's bug of coc, it should not validate quickfix buffer, I've fixed on master branch.

[yml]

Thank you I confirm that this is fix in 0.30.