SMTP page appears broken when language is French (JS issue)
On the SMTP settings admin page, there's a warning when you switch from Redirect to database to a live mode. In French language, the translation has double-quotes, but js-escaping does single quotes and expects the terminator to be single quotes.
The issue is located here
@DaveD was kind enough and quick enough to produce a PR for this: https://github.com/civicrm/civicrm-core/pull/17315 so all credit goes to him.