gen.throw() with multiple yield froms skips intermediate exceptions

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2020-05-20.04:47:05.315>
labels = ['interpreter-core', '3.10']
title = 'gen.throw() with multiple yield froms skips intermediate exceptions'
updated_at = <Date 2020-05-20.04:47:05.315>
user = 'https://github.com/cjerdonek'

bugs.python.org fields:

activity = <Date 2020-05-20.04:47:05.315>
actor = 'chris.jerdonek'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Interpreter Core']
creation = <Date 2020-05-20.04:47:05.315>
creator = 'chris.jerdonek'
dependencies = []
files = []
hgrepos = []
issue_num = 40694
keywords = []
message_count = 1.0
messages = ['369416']
nosy_count = 1.0
nosy_names = ['chris.jerdonek']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = None
url = 'https://bugs.python.org/issue40694'
versions = ['Python 3.10']