fixes #47716 where email confirmation fails after adding additional emails

app/models/email.rb

@@ -25,6 +25,10 @@ class Email < ActiveRecord::Base
     self.errors.add(:email, 'has already been taken') if User.exists?(email: self.email)
   end
 
+  def accept_pending_invitations!
+    user.accept_pending_invitations!
+  end
+
   # once email is confirmed, update the gpg signatures
   def update_invalid_gpg_signatures
     user.update_invalid_gpg_signatures if confirmed?

changelogs/unreleased/fix-email-confirmation-addtional-email.yml

+---
+title: Fix email confirmation bug when user adds additional email to account
+merge_request: 20084
+author: muhammadn
+type: fixed

spec/features/users/add_email_to_existing_account.rb

+require 'spec_helper'
+
+describe 'AdditionalEmailToExistingAccount' do
+  describe 'add secondary email associated with account' do
+    let(:user) { create(:user) }
+
+    it 'verifies confirmation of additional email' do
+      sign_in(user)
+
+      email = create(:email, user: user)
+      visit email_confirmation_path(confirmation_token: email.confirmation_token)
+      expect(page).to have_content 'Your email address has been successfully confirmed.'
+    end
+  end
+end