Default sender address should take langcode into account

Thanks for the report.

getLanguageConfigOverride() needs a $langcode and Address::create() doesn't have one.

I would say that the code in Address.php uses the current language rather than the default language. The solution is to ensure that the current language is correct.

The default sender is set in DefaultsEmailAdjuster::build(). This runs too soon, before the language switch in Mailer::doSend(). We should move the code to set sender into the pre or post render phase - inside an if test that there isn't already a value set.

I think it is related to 🐛 Mails not being send in user preferred language. Active