It's wired that after I upgrade my vim to 8.2.150, the right parts of status line (g:lightline.active.right) simplify disappeared:

Normally it seems like this (with same .vimrc):

My config:
" lightline
let g:lightline = {
\ 'colorscheme': 'equinusocio_material',
\ 'separator': { 'left': '', 'right': '' },
\ 'subseparator': { 'left': '', 'right': '' },
\ }
let g:lightline.tabline = {
\ 'left': [ [ 'buffers' ] ],
\ 'right': [ [ 'close' ] ],
\ }
let g:lightline.component_expand = { 'buffers': 'lightline#bufferline#buffers' }
let g:lightline.component_type = { 'buffers': 'tabsel' }
let g:lightline#bufferline#number_map = {
\ '0': ' 0 ',
\ '1': ' 1 ',
\ '2': ' 2 ',
\ '3': ' 3 ',
\ '4': ' 4 ',
\ '5': ' 5 ',
\ '6': ' 6 ',
\ '7': ' 7 ',
\ '8': ' 8 ',
\ '9': ' 9 ',
\ }
let g:lightline#bufferline#show_number = 2
let g:lightline#bufferline#shorten_path = 0
let g:lightline#bufferline#unnamed = '[No Name]'
nmap <Leader>1 <Plug>lightline#bufferline#go(1)
nmap <Leader>2 <Plug>lightline#bufferline#go(2)
nmap <Leader>3 <Plug>lightline#bufferline#go(3)
nmap <Leader>4 <Plug>lightline#bufferline#go(4)
nmap <Leader>5 <Plug>lightline#bufferline#go(5)
nmap <Leader>6 <Plug>lightline#bufferline#go(6)
nmap <Leader>7 <Plug>lightline#bufferline#go(7)
nmap <Leader>8 <Plug>lightline#bufferline#go(8)
nmap <Leader>9 <Plug>lightline#bufferline#go(9)
nmap <Leader>0 <Plug>lightline#bufferline#go(10)
Vim 8.2.150 has serious problem around range() function (https://github.com/vim/vim/issues/5541). Please wait for fix in Vim.
Thanks for looking into this so quickly ~ I will close this issue.
@chuling I also fixed in this plugin so please update lightline.
@itchyny Amazing! Thanks! :wink: