fs: is fs.unwatchFile() available on Windows?

Version: v4 – master
Platform: Windows 7 x64
Subsystem: fs

Create a script:

'use strict';

const fs = require('fs');

fs.watchFile(__filename, { interval: 1000 }, (current, previous) => {
  console.log(current.size, previous.size);
  fs.unwatchFile(__filename, () => { console.log('File unwatched'); });
  console.log('unwatchFile() called');
});

Launch it, then change and save several times.
Expected output:

275 274
unwatchFile() called
File unwatched
[exit]

Real output

275 274
unwatchFile() called
276 275
unwatchFile() called
277 276
unwatchFile() called
[.., no exit]

I cannot find any caveats in fs doc about this. Is there any?