Michael Thies added the comment:
Thanks for pointing me to this issue. :)
> Michael, if you could check if Jens patch fixes your problem I would
> appreciate it.
Jens PR does exactly, what I proposed in #35057, so it fixes my problem,
New submission from Michael Thies :
Email header refolding in email._header_value_parser adds additional carriage
return symbols to the end of nested parse trees, when used with an EmailPolicy
with linesep='\r\n'. This leads to broken email headers when composing an email
with a "To:&qu