Wrong highlight group in coc.nvim floating window

[davidsierradz]

Hi, from this minimal init.vim:

vim version: NVIM v0.4.0-1385-g5cccfa7c5
term: alacritty
platform: linux

call plug#begin('~/.local/share/nvim/plugged')
Plug 'gruvbox-community/gruvbox'
Plug 'neoclide/coc.nvim', {'do': 'yarn install --frozen-lockfile'}
Plug 'othree/yajs.vim'
" Plug 'pangloss/vim-javascript'
call plug#end()
set background=light
colorscheme gruvbox

Open a javascript file with yajs.vim:

Open a javascript file with vim-javascript:

Looks like something related to Normal vs NormalFloat highlight, from :help api-floatwin:

By default, floats will use hl-NormalFloat as normal highlight, which
links to hl-Pmenu in the builtin color scheme.

Thanks!

Edit:

Looks like if I run :highlight clear Normal or remove this lines from syntax/javascript.vim:

syntax/javascript.vim
437:  HiLink javascriptOpSymbol             Normal
440:  HiLink javascriptParens               Normal
509:  HiLink javascriptComma                Normal

fixes it.