#(tsconfig.json) including a not existing folder breaks the tsserver

• Windows 10
• VSCode 1.7.1 | 1.8.0-insider
• Typescript 2.0.6 | 2.0.7 | 2.1.0-dev.20161107

1. start visual studio code
   
2. open Folder/Project: bug-tsconfig-include-notexistingfolder
   
3. npm install
   
4. open "./src/app.ts"
   
5. check if intellisense is working => yes it's working
   
6. close "./src/app.ts" (close all .ts or .tsx files)
   
7. open "./src/app.ts"
   
8. check if intellisense is working => nope its not
   
9. add folder "./notexistingfolder"
   
10. restart visual studio code
    
11. no problems