fsnotify: "Write" op never reported on Ubuntu.

I’ve tested this program on two flavors of Linux, openSUSE 13.2 and Ubuntu 14.04:

package main

import (
    "fmt"
    "gopkg.in/fsnotify.v1"
)

func main() {
    watcher, err := fsnotify.NewWatcher()
    if err != nil {
        panic(err)
    }
    watcher.Add("hello.txt")
    defer watcher.Close()

    for {
        select {
        case event := <-watcher.Events:
            if event.Op&fsnotify.Create == fsnotify.Create {
                fmt.Println("CREATE " + event.Name)
            } else if event.Op&fsnotify.Write == fsnotify.Write {
                fmt.Println(" WRITE " + event.Name)
            } else if event.Op&fsnotify.Remove == fsnotify.Remove {
                fmt.Println("REMOVE " + event.Name)
            } else if event.Op&fsnotify.Rename == fsnotify.Rename {
                fmt.Println("RENAME " + event.Name)
            } else if event.Op&fsnotify.Chmod == fsnotify.Chmod {
                fmt.Println(" CHMOD " + event.Name)
            } else {
                fmt.Printf("unexpected: %d\n", event.Op)
            }
        case err := <-watcher.Errors:
            panic(err)
        }
    }
}

When I run this on openSUSE and make a change to hello.txt, I get the following output:

 WRITE hello.txt
 CHMOD hello.txt

but when I do the same thing on Ubuntu, this is the output:

RENAME hello.txt
 CHMOD hello.txt
REMOVE hello.txt

and then due to the remove, no further notifications are sent unless it’s manually added back.

Given that it works properly on openSUSE, this is probably not a bug for fsnotify itself, but I’m very thrown off by the results I got from Ubuntu. Why does it behave this way, and is there any workaround for it?