BuddyPress.org

WordPress 6.3 Multi-Site Network with BuddyPress Version 11.3.1
Site: https://kamito.org/
Theme: Twenty Twenty-Three (generic)

Placeholders are not working in > Emails > All Emails
To replicate, register a new user

(1) check the “Recipient has registered for an account” email >
the subject line is showing: “[] Activate your account” instead of displaying the site.name instead of the brackets.

(2) check the “Recipient has successfully activated an account.” email >
the subject is showing: “[] Welcome!” instead of displaying the site.name instead of the brackets.
(2a) click on the ‘profile’ link inside the email and the ‘this page’ link you’ll see what I mean with this error. Links in system generated emails seems like adding “%7B%7B%7B” to the URL or “http://” infront of the URL

(3) check the new user email again, WordPress continue to send their own “Welcome Email”