some key mapping will disable after installing this plugin

[eyebrowkang]

Hello, I am using neovim, but some key mapping will be disabled after I use some plugins, such as vim-surround and coc-explorer

after execute yskw', the u will restore to undo key, but i set it moving cursor up, and it will be ok if you
comment this plugin, and vim has this problem too

here is an example init.vim or vimrc:

" Undo operations
noremap l u
" Insert Key
" type yskw' to wrap the word with '' or type cs'` to change 'word' to `word` S for visual mode
noremap k i
"     ^
"     u
" < n   i >
"     e
"     v
noremap u k
noremap n h
noremap e j
noremap i l
call plug#begin()
Plug 'tpope/vim-surround'
Plug 'tpope/vim-repeat'
call plug#end()

[huwqchn]

some issue