Please answer these questions before submitting your issue. Thanks!

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

go version go1.9 windows/amd64

Does this issue reproduce with the latest release?

Yes

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

set GOARCH=amd64
set GOBIN=
set GOEXE=.exe
set GOHOSTARCH=amd64
set GOHOSTOS=windows
set GOOS=windows
set GOPATH=C:\Users\dglass\go
set GORACE=
set GOROOT=C:\go
set GOTOOLDIR=C:\go\pkg\tool\windows_amd64
set GCCGO=gccgo
set CC=gcc
set GOGCCFLAGS=-m64 -mthreads -fmessage-length=0 -fdebug-prefix-map=C:\Users\dglass\AppData\Local\Temp\go-build241023583=/tmp/go-build -gno-record-gcc-switches
set CXX=g++
set CGO_ENABLED=1
set CGO_CFLAGS=-g -O2
set CGO_CPPFLAGS=
set CGO_CXXFLAGS=-g -O2
set CGO_FFLAGS=-g -O2
set CGO_LDFLAGS=-g -O2
set PKG_CONFIG=pkg-config

Windows 7 Enterprise
Service Pack 1
64-bit operating system

Intel(R)Core(TM)i5-5300U CPU @2.30GHz 2.30 GHz

What did you do?

If possible, provide a recipe for reproducing the error.
A complete runnable program is good.
A link on play.golang.org is best.

From the Windows command line (CMD), I used go run to run a hello world program like https://play.golang.org/p/v3rrZLwEUC

go run hello.go

What did you expect to see?

I expected the program to return to the command line immediately.

What did you see instead?

The program hung for a few minutes after it appeared to be done (e.g. after the last output was written).
And, it could not be interrupted with Control-C.

Note that the problem (delay) does not seem to occur with a compiled version of the program, just with go run.