Mock.call_args and Mock.call_args_list not propagated to parent Mock

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2019-10-17.12:23:54.924>
labels = []
title = 'Mock.call_args and Mock.call_args_list not propagated to parent Mock'
updated_at = <Date 2019-10-28.20:47:49.330>
user = 'https://bugs.python.org/CarisMoses'

bugs.python.org fields:

activity = <Date 2019-10-28.20:47:49.330>
actor = 'pconnell'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = []
creation = <Date 2019-10-17.12:23:54.924>
creator = 'Caris Moses'
dependencies = []
files = []
hgrepos = []
issue_num = 38505
keywords = []
message_count = 1.0
messages = ['354841']
nosy_count = 3.0
nosy_names = ['pconnell', 'xtreak', 'Caris Moses']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = None
url = 'https://bugs.python.org/issue38505'
versions = []