title: Special character bindings stopped working after some update
body: <p>I was trying to add a pluggin to my nvim when I strarted fixing my :checkhealth</p>
  <p>I ran few commands:</p>
  <pre><code>pip3 install pynvim
  yarn global add neovim
  npm install -g neovim
  gem install neovim
  gem environment
  </code></pre>
  <p>Then, I noticed few binding were not working anymore:</p>
  <pre><code>nnoremap _ V
  nnoremap \| &lt;C-r&gt;
  </code></pre>
  <p>(and probably few others)</p>
  <p>In the my (dvorak) keyboard, those bindings are shifted binding of special keys and for some reasons when I press them, I get a result like if I was pressing <code>&lt;HOME&gt;</code>.</p>
  <p>I tried to check the <code>:map _</code> and <code>:verbose map _</code> and it is binded correctly.</p>
  <p>Furthermore, I had another nvim openned before I made the modifications and the bindings were still working.</p>
  <p>I cannot figue out why its not working. Any idea? thanks</p>
  <p>EDIT: even with the command <code>nvim --noplugin -u /dev/null</code> and then manually setting up the binding, it still does not work</p>