With 'nnoremap * *N', Vim won't highlight the word under cursor when the next match is inside a closed fold

I like to use the following mapping to keep the cursor at the current word:
```vim
nnoremap * *N
```
When the next match is inside a closed fold, Vim won't highlight the word under the cursor (or any previous word) when I press `*`. It does work without `vim-cool`.