Language of the email reminders are using site's primary locale, not journal's primary locale

Hello,
it seems if a user has not specified a working language in their profile, the review reminder emails sent by OJS are not using the journal’s default language.
The email is sent with the Primary locale defined in the global OJS settings.

The language defined as Primary locale is French (Canada) in Administration → Site Management → Site Settings → Languages

The language defined as the journal’s primary locale is English

We are using OJS 3.4.0.3

Did we miss a setting somewhere ?
We have a multi journal instance.

Thanks!