VS 2017\'s new \"Go to All\" (Ctrl + T or Ctrl + ,) does not lists items for me.
Searched for a setting for it, no luck. Also no error messages regarding this at all. An
For me - helped to move project folder to another path and open in visual studio as a new project. You can simply test that scenario by creating new visual studio solution and try to search there - if search will works, then folder movement could be a solution for you.
Just to note - i tried to open nodejs project, there are about more then 300k files and maybe it's the main reason, also maybe it was visual studio cache (tried to delete cache files - it was unhelpful).