Files don't close when saving session in windows

[eduardoarandah]

For some reason, (in windows) buffers can't be removed from session.
This happened recently, not sure when but might be somewhere in the last 2 months.

Version: 2.13.1
Editor: Gvim 8.2
Platform: Windows 10

Config:

Plug 'xolox/vim-session'

let g:session_autoload = 'no'
let g:session_autosave = 'yes'
let g:session_directory = $HOME."/.vim/sessions"
let g:session_extension = ''

" Create dir
if !isdirectory($HOME."/.vim/sessions")
  call mkdir($HOME."/.vim/sessions","p")
endif