Line Breaks in New User Activation Email

I’ve spent way too long trying to figure this out so I’m hoping for some help.

The new user activation email shows in this format: Username: TESTUSER Password: TESTPASSWORD Please click this link to activate your account: https://domin.com/key

It’s all ran together on one line and I can’t seem to manage to get a line break in there. It;s odd because when looking at page-user-registration.php it shows:
$message = esc_html__(“Username:”,’arcane’).” $user_id \n\n”. esc_html__(“Password: “,’arcane’). “$userpassword”;
$message .= “\n\n”;
$message .= esc_html__(‘Please click this link to activate your account: ‘,’arcane’);
On line 135.
the “\n\n” should do the trick but it’s not. I would like the email to come out looking something like this:

Username: TESTUSER
Password: TESTPASSWORD
Please click this link to activate your account: https://domin.com/key

(obviously I’ve replaced all actual user/password/key with dummy text)

Any help with this would be GREATLY appreciated!
Thanks!

I’ve attached a picture of the page-user-registration.php and a capture of what the email looks like.