Terminating nw Process by Ctrl+C Makes Its Children Zombies

[KSR-Yasuda]

By default, nw command waits for its main process termination to remain as the console's foreground process.
At this point, terminate it by Ctrl+C, nw's child processes are not killed and turn into zombies.

nw command invokes 3 or 4 processes.
After Ctrl+C termination, there remain 2 or 3 processes.
I think Ctrl+C would kill just the main process, and left 2~3 processes would be child processes.

On the other hand, terminating via GUI ❎ button works well to clean all the nw processes.

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• OS: Windows 8.1 Pro (x64)
• Node.js: v8.11.3
• nw: v0.31.4 (Both of normal ver. and SDK ver.)
  • 💬 Executed $(npm bin)/nw on git bash

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Do you have any better solution for this?
I sometimes got OS freeze by this, with nw zombies eat up memory (Horrible!).

In issue #9, they've talked about non-waiting nw execution.
Now I think this may help, at least (Avoid Ctrl+C itself, by making nw non-wait).