e-mail that has an alias with spaces

I received an email that was written with Thunderbird/45.2.0.
In the CC there is one address that has a weird alias:

Cc: Xxxxxx Xxxxxxxxx <x.xxxx@xxxxxx.com>,
 mail@x x x x x x x x x <mail@xxxxxxxxxxxxxx.com>,
 xxxx@xxxxxxxxxx.com

eM client does not like the second line. I see only the following:

Copy to “Xxxxxx Xxxxxxxxx”, “mail@x”

Also when I try to reply to all recipients, it uses this crippled second email address.

Clearly a bug.