git line ending bug?

test.sh

#!/bin/sh

#
# !!! Please run this test on Windows !!!
#
# Unexpected result confirmed with the following versions:
# $ git --version
# git version 1.9.5.msysgit.1
# git version 2.5.0.windows.1
#
rm -rf git-test
mkdir git-test

#
# Setup
#
cd git-test
git init
git config core.autocrlf true
cat >.gitattributes <<-\EOF
#* text=auto

before-binary.txt binary
*.txt text
after-binary.txt binary
EOF
git add .
git commit -m "Setup"

#
# Add files
#
printf "\n" >middle-text.txt
printf "\n" >before-binary.txt
printf "\n" >after-binary.txt
git add .
git commit -m "Add files"

#
# Normalize line endings
#
git rm --cached -r .
git reset --hard
git add .
git commit -m "Normalize line endings"

#
# Results
#
printf "\r\n" >expect-middle
cmp expect-middle middle-text.txt

# !!! UNEXPECTED !!!
# "before-binary.txt" is marked as binary in .gitattributes but line conversions are performed
printf "\r\n" >expect-before
cmp expect-before before-binary.txt

printf "\n" >expect-after
cmp expect-after after-binary.txt