empty local-part in addr_spec displayed incorrectly

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2019-09-20.14:34:10.438>
labels = ['3.8', 'type-bug', '3.7', 'expert-email', '3.9']
title = 'empty local-part in addr_spec displayed incorrectly'
updated_at = <Date 2019-10-05.01:18:00.344>
user = 'https://github.com/andreitroiebbc'

bugs.python.org fields:

activity = <Date 2019-10-05.01:18:00.344>
actor = 'maxking'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['email']
creation = <Date 2019-09-20.14:34:10.438>
creator = 'andreitroiebbc'
dependencies = []
files = ['48617']
hgrepos = []
issue_num = 38232
keywords = []
message_count = 3.0
messages = ['352852', '353003', '353983']
nosy_count = 4.0
nosy_names = ['barry', 'r.david.murray', 'maxking', 'andreitroiebbc']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue38232'
versions = ['Python 3.6', 'Python 3.7', 'Python 3.8', 'Python 3.9']