WSL1 background color bug.

[SomePersonFromMars]

Hello there I am pretty new to vim and I've just installed gruvbox on my vim. I am using Ubuntu/WSL1.

I've got a glitch while scrolling the buffer - in the dark mode the empty spaces after the EOL becomes yellow, in the light mode these are white.

Here is a screenshot of the problem:

Here is my vim version:

VIM - Vi IMproved 8.0 (2016 Sep 12, compiled Jun 06 2019 17:31:41)

And here is my .vimrc file:

scriptencoding utf-8
set encoding=utf-8

" An example for a vimrc file.
"
" Maintainer:   Bram Moolenaar <Bram@vim.org>
" Last change:  2017 Sep 20
"
" To use it, copy it to
"     for Unix and OS/2:  ~/.vimrc
"         for Amiga:  s:.vimrc
"  for MS-DOS and Win32:  $VIM\_vimrc
"       for OpenVMS:  sys$login:.vimrc

" When started as "evim", evim.vim will already have done these settings.
if v:progname =~? "evim"
  finish
endif

" Get the defaults that most users want.
source $VIMRUNTIME/defaults.vim

if has("vms")
  set nobackup      " do not keep a backup file, use versions instead
else
  set backup        " keep a backup file (restore to previous version)
  if has('persistent_undo')
    set undofile    " keep an undo file (undo changes after closing)
  endif
endif

if &t_Co > 2 || has("gui_running")
  " Switch on highlighting the last used search pattern.
  set hlsearch
endif

" Only do this part when compiled with support for autocommands.
if has("autocmd")

  " Put these in an autocmd group, so that we can delete them easily.
  augroup vimrcEx
  au!

  " For all text files set 'textwidth' to 78 characters.
  autocmd FileType text setlocal textwidth=78

  augroup END

else

  set autoindent        " always set autoindenting on

endif " has("autocmd")

" Add optional packages.
"
" The matchit plugin makes the % command work better, but it is not backwards
" compatible.
" The ! means the package won't be loaded right away but when plugins are
" loaded during initialization.
if has('syntax') && has('eval')
  packadd! matchit
endif

call plug#begin('~/.vim/plugged')

Plug 'scrooloose/nerdtree'

Plug 'Yggdroot/indentLine'

Plug 'morhetz/gruvbox'

call plug#end()

let g:gruvbox_italic=1
colorscheme gruvbox
set background=dark

[fauen]

I get the same issue running the same setup.

[morhetz]

https://superuser.com/questions/457911/in-vim-background-color-changes-on-scrolling