Intercepting thread lock objects not working under context managers

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2020-12-21.15:11:17.394>
labels = ['type-bug', '3.8', '3.9', '3.10', 'expert-C-API', '3.7', 'docs']
title = 'Intercepting thread lock objects not working under context managers'
updated_at = <Date 2021-01-17.12:27:24.728>
user = 'https://github.com/mhmdkanj'

bugs.python.org fields:

activity = <Date 2021-01-17.12:27:24.728>
actor = 'jkloth'
assignee = 'docs@python'
closed = False
closed_date = None
closer = None
components = ['Demos and Tools', 'Documentation', 'C API']
creation = <Date 2020-12-21.15:11:17.394>
creator = 'mhmdkanj'
dependencies = []
files = ['49695']
hgrepos = []
issue_num = 42705
keywords = []
message_count = 3.0
messages = ['383530', '383557', '383560']
nosy_count = 6.0
nosy_names = ['rhettinger', 'vstinner', 'eric.araujo', 'docs@python', 'dstufft', 'mhmdkanj']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue42705'
versions = ['Python 3.6', 'Python 3.7', 'Python 3.8', 'Python 3.9', 'Python 3.10']