What version of Go are you using (go version)?

$ go version
on Playground and in Docker

Does this issue reproduce with the latest release?

I don't know because I didn't use it before

What operating system and processor architecture are you using (go env)?

$ go env
on Playground and in Docker

What did you do?

package main

import (
	"golang.org/x/text/language"
	"golang.org/x/text/message"
	"os"
)

func main() {
	message.SetString(language.Dutch, "soccer", "voetbal")
	p := message.NewPrinter(language.Dutch)
	p.Println("soccer")
	p.Fprintln(os.Stdout, "soccer")
	p.Print("soccer", "\n")
	p.Printf("soccer", "\n")

}

https://play.golang.org/p/LjQ6DfG1CJX

What did you expect to see?

voetbal
voetbal
voetbal
voetbal

What did you see instead?

soccer
soccer
soccer
voetbal