Potential argparse issue?

## argparseissue.py
#!/usr/bin/env python

# mac OSX 10.10.3
# python 2.7.10 (installed with homebrew)
# argparse 1.4.0

# to test  - `python argparseissue.py --help`

# expected -
# usage: issue.py [-h] -f FOO [-b BAR]
#
# This is an attempt to replicate an issue with argparse
#
# required arguments:
#   -f FOO, --foo FOO  this argument is REQUIRED!!!
# optional arguments:
#   -h, --help         show this help message and exit
#   -b BAR, --bar BAR  this argument is optional
#
# I hope somebody fixes it!

# actual -
# usage: issue.py [-h] -f FOO [-b BAR]
#
# This is an attempt to replicate an issue with argparse
#
# optional arguments:
#   -h, --help         show this help message and exit
#   -f FOO, --foo FOO  this argument is REQUIRED!!!
#   -b BAR, --bar BAR  this argument is optional
#
# I hope somebody fixes it!

from argparse import ArgumentParser
parser = ArgumentParser(description='This is an attempt to replicate an issue with argparse',
                        epilog='I hope somebody fixes it!')
parser.add_argument('-f', '--foo', required=True, help='this argument is REQUIRED!!!')
parser.add_argument('-b', '--bar', help='this argument is optional')
parser.parse_args()